January Weather in Ratchathewi, Thailand

Last updated: August 27, 2025

January in Ratchathewi, Thailand showcases a delightful blend of warm temperatures and moderate humidity, making it an appealing time to explore the area. With maximum temperatures reaching 35°C (94°F) and an average of 27°C (81°F), the days are typically sunny, while cooler evenings dip to a refreshing 16°C (61°F). This month sees a modest precipitation amount of 29 mm (1.1 in) over just 3 days, allowing for the vibrant scenery without heavy rain interruptions. Enjoy the comfort of 59% humidity, providing a pleasant atmosphere for both locals and visitors alike.

January Temperature in Ratchathewi

In Ratchathewi, Thailand, January welcomes visitors with a mild climate, featuring minimum temperatures around 16°C (61°F) and a comfortable average of 27°C (81°F), peaking at a warm 35°C (94°F). As the month progresses into February, the temperatures gradually rise, with lows of 19°C (66°F) and a slight increase in the average to 28°C (82°F). This upward trend continues through March, where the heat intensifies, reaching maximums of 37°C (99°F) by late summer. Notably, January offers a cozy atmosphere ideal for exploring, showcasing a perfect balance before the more intense heat of the upcoming months, highlighted by warmer averages and peak temperatures hitting 40°C (104°F) by May. Overall, January in Ratchathewi sets the stage for a comfortable start to the year, transitioning smoothly into the heat of summer.

January Weather in Ratchathewi: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Ratchathewi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ratchathewi, January typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec808285868686858584838280
Data source: Temperature data for Ratchathewi generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Ratchathewi

In Ratchathewi, Thailand, January marks a relatively dry start to the year, with precipitation totaling only 29 mm (1.1 in) across just three rainy days. This light rainfall sets the tone for the months ahead, as precipitation notably increases in February before surging dramatically from March onward, culminating in the monsoon season by mid-year, where July and August see significant rainfall amounts of 159 mm (6.2 in) and 163 mm (6.4 in), respectively. The trend reveals a clear seasonal shift, where the dry spell of January offers a brief respite before the region transitions into its wetter periods, highlighting the cyclical patterns characteristic of Ratchathewi's tropical climate. As the year progresses, water levels and greenery flourish, painting a vibrant picture of Thailand's natural beauty in contrast to the tranquil dryness of early January.

January Precipitation Trends in Ratchathewi

The chart displays monthly precipitation patterns in Ratchathewi, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Ratchathewi, January typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec2914441071421121591632452506124
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

January Humidity in Ratchathewi

In January, Ratchathewi experiences a moderate humidity level of 59%, providing a comfortable atmosphere as the New Year unfolds. This initial humidity sets the stage for a gradual increase in moisture throughout the months. By February, the humidity dips slightly to 58%, only to rise steadily as spring approaches, reaching 61% in March. The onset of the hotter months brings a noticeable uptick, with April peaking at 70%. As the region transitions into the rainy season, humidity levels soar dramatically, hitting a sticky 86% by July and peaking at 88% in August. Following this peak, humidity starts to decline gradually but remains elevated, hovering around the 70-80% range through the autumn months. Thus, while January offers a relatively pleasant start, the gradual increase in humidity foreshadows the tropical climate that defines Ratchathewi for the rest of the year.

January Average Humidity in Ratchathewi

This chart illustrates the average monthly humidity levels in Ratchathewi, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Ratchathewi is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec59%58%61%70%80%85%86%88%87%83%78%70%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Ratchathewi

In January, Ratchathewi, Thailand, experiences a very high UV Index of 10, indicating that sun protection is essential for outdoor activities. With a burn time of just 15 minutes, it's crucial to be mindful of sun exposure. As the month progresses into February, the UV Index climbs to an extreme level of 12, and this trend continues through March and April, peaking at 14 during both May and July, signifying an urgent need for sun safety precautions. While the index dips slightly in the latter months, it remains very high to extreme, making vigilance paramount throughout the year. For detailed insights and forecasts, visit Ratchathewi UV Index.

Maximum UV Index Levels in Ratchathewi for January

The chart shows the monthly maximum UV Index (UVI) for Ratchathewi in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Ratchathewi typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1012141314131414131298
Data source: Ratchathewi January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

January Sunshine in Ratchathewi

In Ratchathewi, Thailand, January welcomes the year with 251 hours of sunshine, setting the stage for a gradual increase as the months progress. As February arrives, the sun graces the area with 299 hours of radiant light, hinting at the approaching warmth of spring. March shines the brightest with 336 hours, marking the peak of light as anticipation builds for the hotter months ahead. However, April and May maintain the warmth with 322 and 321 hours respectively, showcasing a consistent abundance of sunshine before it slightly declines in June to 302 hours. The trend continues with a gradual decrease through the summer months, yet as autumn approaches, October sees a rebound with 287 hours. November and December culminate the year with 294 and 316 hours, respectively, reflecting the region's overall bright disposition through the changing seasons. This rhythmic pattern highlights Ratchathewi’s sunny charm, making it a vibrant destination for those seeking warmth and brightness year-round.

Monthly Sunshine Duration in Ratchathewi: January Highlighted

The January sunshine duration represents the total number of hours Ratchathewi experiences direct sunlight during the month of January, excluding cloudy or obstructed periods. This chart compares the sunshine duration of January with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec251h299h336h322h321h302h290h280h268h287h294h316h
Data source: Ratchathewi January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ratchathewi During January

In Ratchathewi, Thailand, January ushers in a moderate chance of sunshine, boasting a 58% likelihood of clear skies. This aligns well with the tail end of the dry season, just before the sweltering heat of April, which plunges to a stark 18% chance of sunny weather. The following months of February and December showcase a contrast, offering a more inviting 76% and 63% respectively, making them ideal for outdoor pursuits. As the months progress into the rainy season from May to August, the probability of sunny days drastically dips, highlighting January as a sweet spot for sunshine lovers before the clouds roll in.

Percentage of Sunny Days in January in Ratchathewi

The chart illustrates the percentage of sunny days in Ratchathewi throughout the year, with January highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Ratchathewi experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec58%76%57%18%33%17%11%9%10%14%29%63%
Data source: Ratchathewi January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ratchathewi in January

In Ratchathewi, Thailand, January marks the beginning of the year with a consistent 11 hours of daylight, which remains steady through February. As spring approaches in March, daylight increases to 12 hours, a duration that persists through the summer months. This ample daylight encourages outdoor activities and vibrant city life. Interestingly, as autumn arrives in October, daylight begins to decrease again, returning to 11 hours by November and December. This cyclical variation in daylight highlights a rhythmic dance of light throughout the year, contributing to the region's unique seasonal charm.

Average Daylight Hours in Ratchathewi for January

The chart illustrates the variation in daylight duration in Ratchathewi throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 24m11h 40m12h 2m12h 25m12h 45m12h 54m12h 49m12h 33m12h 11m11h 48m11h 28m11h 19m
Data source: Ratchathewi daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Ratchathewi

In January, Ratchathewi experiences a gentle breeze with an average wind speed of 2.3 m/s (5 mph), slightly picking up in February to 2.4 m/s (5 mph). As the month transitions into March, the winds grow more robust, reaching 3.0 m/s (7 mph), which indicates an uptick in activity as the seasons shift. However, the hot spells of April see a slight reduction to 1.9 m/s (4 mph), before stabilizing again in May at 2.4 m/s (5 mph). The summer months usher back stronger breezes with another peak of 3.0 m/s (7 mph) in June, followed by consistent winds between 2.6 m/s to 2.7 m/s (6 mph) through July and August. As the year winds down, the average speeds settle back to around 2.0 to 2.2 m/s (5 mph) from September to November, showcasing a gentle conclusion to the year's climatic rhythm. Overall, January sets the tone with mild breezes, sparking a season that ebbs and flows, reflecting nature's dynamic patterns in this vibrant city.

Average January Wind Speed in Ratchathewi

The chart displays monthly wind speed patterns in Ratchathewi, with values for each month shown alongside January's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how January's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.3 m/s2.43.01.92.43.02.72.62.02.02.22.6
Data source: Ratchathewi January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Ratchathewi Compares to Other Months

Weather in Ratchathewi varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Ratchathewi, focusing on differences in temperature, rainfall, humidity, and UV levels.

In comparing the weather of January and February, we see a slight increase in minimum temperatures, with January's minimum at 16°C (61°F) rising to 19°C (66°F) in February. The average temperature remains relatively stable, with January averaging 27°C (81°F) and February at 28°C (82°F). Both months experience maximum temperatures peaking at 35°C (94°F in January and 96°F in February), indicating consistent warmth. Precipitation decreases significantly in February to 14 mm (0.5 in) from January's 29 mm (1.1 in), yet both months have approximately the same number of rainy days at three. Humidity levels are also comparable, with January at 59% and February slightly lower at 58%. For more detailed information on February's weather, you can visit Ratchathewi weather in February.

In January, the weather is generally milder, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (94°F) and an average of 27°C (81°F). This month experiences lower precipitation, averaging 29 mm (1.1 in) over three days and humidity levels around 59%. In contrast, March sees a rise in temperatures, with a minimum of 22°C (72°F), an average of 30°C (86°F), and a maximum of 37°C (99°F). Additionally, precipitation increases to 44 mm (1.7 in) spread over five days, accompanied by a slight rise in humidity to 61%. For more detailed information, you can check Ratchathewi weather in March.

In January, the weather is warm but relatively mild, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (94°F). There is limited rainfall, averaging only 29 mm (1.1 in) over about 3 days, and the humidity sits at a comfortable 59%. In contrast, April experiences significantly warmer temperatures, with a minimum of 21°C (70°F) and a maximum soaring to 38°C (100°F). Precipitation increases dramatically to 107 mm (4.2 in) over approximately 12 days, and the humidity rises to 70%, contributing to a more oppressive heat. For a detailed look at the weather specifics in April, visit Ratchathewi weather in April.

January generally offers milder weather compared to May, with average temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (94°F). During this month, there is relatively low precipitation, with only 29 mm (1.1 in) over about three days and a humidity level of 59%. In contrast, May experiences warmer temperatures, with minimums of 23°C (74°F) and maximums reaching as high as 40°C (103°F). This month is significantly wetter, receiving 142 mm (5.6 in) of rain over 19 days, and the humidity also rises to a high of 80%. For a detailed look at the weather during this month, you can check Ratchathewi weather in May.

In January, the weather is relatively mild, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (94°F) and an average of 27°C (81°F). The month sees modest precipitation, with only 29 mm (1.1 in) over about 3 days and humidity levels at 59%. In contrast, June experiences significantly warmer temperatures, with a minimum of 25°C (78°F) and a maximum of 37°C (99°F), averaging 30°C (86°F). However, June is also much wetter, receiving 112 mm (4.4 in) of rain over 22 days, along with higher humidity levels at 85%. For more details on the rainy conditions, you can check Ratchathewi weather in June.

When comparing the weather in January and July, we see significant differences in both temperature and precipitation. In January, temperatures range from a minimum of 16°C (61°F) to a maximum of 35°C (94°F), with an average of 27°C (81°F). The month experiences relatively low precipitation, totaling just 29 mm (1.1 in) over three days, and humidity levels are at 59%. In contrast, July brings much warmer conditions, with minimum temperatures rising to 25°C (78°F) and maximums reaching 37°C (99°F). The average temperature in July is 29°C (85°F), and the month is notably wetter, receiving 159 mm (6.2 in) of rainfall over 26 days, along with higher humidity at 86%. For a closer look at what to expect, check out Ratchathewi weather in July.

The weather in January presents a warm and comparatively dry climate, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (94°F) and an average of 27°C (81°F). This month sees only 29 mm (1.1 in) of precipitation over approximately 3 days, resulting in a humidity level of 59%. In contrast, August experiences significantly warmer temperatures, with a minimum of 25°C (77°F) and a maximum reaching up to 37°C (99°F), averaging 29°C (85°F). However, August is also characterized by heavy rainfall, totaling 163 mm (6.4 in) across 23 days, and a much higher humidity level of 88%. For more detailed information, you can check the Ratchathewi weather in August.

In January, the weather is generally warm and pleasant, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (94°F) and an average of 27°C (81°F). This month experiences relatively low precipitation, totaling just 29 mm (1.1 in) over about 3 days, and humidity levels are moderate at 59%. In contrast, September sees noticeably warmer temperatures, with minimums of 24°C (76°F) and maximums reaching 36°C (97°F), averaging 29°C (84°F). However, the month is significantly wetter, with precipitation of 245 mm (9.6 in) spread across about 24 days, and much higher humidity at 87%. For more detailed insights on the weather during September, you can check out Ratchathewi weather in September.

In January, the weather is generally warm, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (94°F) and an average of 27°C (81°F). The month sees relatively low precipitation, with only 29 mm (1.1 in) recorded over 3 days, resulting in a humidity level of 59%. In contrast, October experiences warmer nights, with minimum temperatures starting at 23°C (74°F) and soaring to a maximum of 35°C (96°F), while the average hovers around 29°C (84°F). However, October is marked by significantly increased rainfall, totaling 250 mm (9.9 in) spread over 21 days, along with higher humidity at 83%. For more detailed weather insights, you can check Ratchathewi weather in October.

In January, the weather is generally warm with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (94°F), and an average of 27°C (81°F). This month experiences relatively low precipitation, totaling 29 mm (1.1 in) over just 3 days, accompanied by a humidity level of 59%. In contrast, November sees slightly higher temperatures, with minimums around 21°C (70°F) and average highs of 28°C (83°F). This month is wetter, receiving 61 mm (2.4 in) of rain over 9 days and a higher humidity level of 78%. For a more detailed look at the weather patterns, you can check Ratchathewi weather in November.

In comparing the weather from January to December, both months display warm temperatures with averages hovering around 27°C (81°F). January experiences slightly higher maximum temperatures, reaching 35°C (94°F), while December sees a peak of 35°C (95°F). Precipitation is minimal in both months, with January receiving a bit more rainfall at 29 mm (1.1 in) over three days compared to December's 24 mm (0.9 in) over just two days. Furthermore, humidity levels are higher in December at 70%, compared to January's 59%. For more details on weather trends during December, you can check Ratchathewi weather in December.

Compare Ratchathewi's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Ratchathewi

As January rolls in, Ratchathewi experiences a notable shift in weather that sets it apart from other months. With pleasantly warm temperatures averaging around 27°C (81°F) and maximum highs reaching 35°C (94°F), it's an ideal time for outdoor activities. The month is also characterized by lower humidity levels at 59%, making the heat more bearable and less stifling. Rainfall is minimal, with just a few days of precipitation, totaling 29 mm (1.1 in), allowing for plenty of sunny days to explore the vibrant surroundings. For more detailed insights into Ratchathewi's climate throughout the year, check out Ratchathewi Climate.