December Weather in Ratchathewi, Thailand

Last updated: August 27, 2025

In December, Ratchathewi, Thailand, offers a delightful escape with average temperatures hovering around 27°C (80°F). Visitors can enjoy warm days, peaking at 35°C (95°F), while the nights cool down to a refreshing 15°C (59°F). Despite a modest precipitation amount of 24 mm (0.9 in) spread over just 2 days, the humidity remains at a comfortable 70%, creating a pleasant atmosphere for both locals and tourists. This month is ideal for outdoor activities and exploration, allowing you to fully experience the charm of this vibrant locale.

December Temperature in Ratchathewi

In December, Ratchathewi enjoys a delightful transition into cooler weather, setting a backdrop for vibrant outdoor activities. The minimum temperature dips to a refreshing 15°C (59°F), making it one of the coolest months of the year. Meanwhile, the average temperature remains comfortable at 27°C (80°F), peaking at a warm 35°C (95°F) during the day. This pattern signifies a slight reprieve from the oppressive heat of the preceding months, with December offering pleasant evenings perfect for exploring the bustling street markets or enjoying a serene stroll through the city's parks. As the year winds down, the weather in Ratchathewi becomes increasingly inviting, making it an ideal time for both locals and tourists to embrace the vibrant culture and festivities of Thailand.

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

The chart illustrates December 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, December 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.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Ratchathewi

In Ratchathewi, Thailand, December marks a return to drier weather as the region transitions away from the heavy rains of the monsoon season. With only 24 mm (0.9 in) of precipitation spread over just 2 days, December's rainfall is significantly lower than the months preceding it, reflecting a notable trend of decreasing moisture. This annual dip in precipitation sets the stage for cooler and more comfortable conditions, inviting residents and visitors alike to enjoy the festive season with clearer skies. As the year wraps up, the lighter rains signal the end of the wet season, paving the way for the drier months ahead.

December Precipitation Trends in Ratchathewi

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

In Ratchathewi, Thailand, December sees a noticeable drop in humidity, settling at 70%. This marks a significant shift from the peak humidity experienced during the mid-year months, where levels soared to 88% in August and hovered above 85% for several consecutive months. Following a gradual decline from the oppressive conditions of June through November, December provides a welcome respite as the air becomes drier. As the year closes, humidity levels stabilize, reflecting a seasonal transition that offers a blend of cooler temperatures and more comfortable atmospheric conditions, inviting residents and visitors alike to enjoy the festive end of the year.

December Average Humidity in Ratchathewi

This chart illustrates the average monthly humidity levels in Ratchathewi, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, 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 December generated using information from the Copernicus Climate Change Service.

December UV Index in Ratchathewi

December in Ratchathewi, Thailand, sees a UV Index of 8, falling into the very high exposure category with a burn time of 15 minutes. This marks a slight decrease from the peak levels experienced in the preceding months, where the index reached as high as 14 from March to July, indicating an extreme risk of harm from unprotected sun exposure. The trend shows a gradual decline towards the end of the year, suggesting that while the sun's intensity lessens, caution remains essential, especially during midday. As you enjoy the cooler December weather, it’s crucial to remain sun-smart. For detailed information, visit Ratchathewi UV Index.

Maximum UV Index Levels in Ratchathewi for December

The chart shows the monthly maximum UV Index (UVI) for Ratchathewi in December, 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 December, the maximum UV index in Ratchathewi typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1012141314131414131298
Data source: Ratchathewi December 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.

December Sunshine in Ratchathewi

As the year winds down, December in Ratchathewi, Thailand, shines with 316 hours of radiant sunshine, making it one of the sunniest months of the year. This delightful stretch of light follows a gradual decline from the peak of 336 hours in March, reflecting a pattern where the region basks in abundant sunlight through the early months before experiencing a natural ebb during the latter half of the year. While July and August see the least sun at 290 and 280 hours respectively, the overall trend reveals a cozy warmth that lingers through late autumn and into winter, inviting both locals and visitors to revel in the beauty of Thailand’s tropical charm.

Monthly Sunshine Duration in Ratchathewi: December Highlighted

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

Chance of Sun in Ratchathewi During December

In December, Ratchathewi, Thailand, emerges as a promising destination for sun-seekers, boasting a 63% chance of sunny weather. This marks a significant improvement when compared to the preceding months, notably from April to November, where the likelihood of sunshine hovered between a mere 10% and 33%. Interestingly, December’s forecast mirrors the sunnier days of early January (58%) and even outshines March (56%), making it a delightful choice for outdoor activities. As the year wraps up, travelers can revel in the increased solar abundance, heralding a festive atmosphere perfect for exploring the vibrant sights and sounds of this lively locale.

Percentage of Sunny Days in December in Ratchathewi

The chart illustrates the percentage of sunny days in Ratchathewi throughout the year, with December 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 December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ratchathewi in December

In Ratchathewi, Thailand, daylight duration exhibits a rhythmic pattern throughout the year, with December marking a return to the shorter 11 hours of daylight. Following a consistent period of 12 hours from March to September, the daylight begins to wane in October and November, creating a transition into the colder, shorter days of winter. This trend suggests a subtle ebb in daylight as the year draws to a close, providing a unique opportunity to experience the city's evening ambiance. As the months shift back to 11 hours in December, residents and visitors alike can savor the cooler temperatures and festive spirit that accompany this time of year, highlighting the beautiful interplay between light and lifestyle in this vibrant Thai locale.

Average Daylight Hours in Ratchathewi for December

The chart illustrates the variation in daylight duration in Ratchathewi throughout the year, with December 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.

December Winds in Ratchathewi

In December, Ratchathewi experiences a delightful uptick in wind speed, averaging 2.6 m/s (6 mph). This gentle breeze marks an increase from the cooler, calmer winds of April and September, both hovering around 1.9 m/s (4 mph) and 2.0 m/s (5 mph) respectively. As the year draws to a close, the wind reaches its peak for the latter half, reminiscent of the more spirited winds seen in the summer months of March and June, where they consistently hit 3.0 m/s (7 mph). This trend not only adds a refreshing chill as temperatures dip, but also creates a pleasant backdrop for outdoor activities and festivities that flourish during this vibrant time in Thailand.

Average December Wind Speed in Ratchathewi

The chart displays monthly wind speed patterns in Ratchathewi, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.32.43.01.92.43.02.72.62.02.02.22.6 m/s
Data source: Ratchathewi December wind data, generated using information from the Copernicus Climate Change Service.

How December 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 December’s weather to other months in Ratchathewi, focusing on differences in temperature, rainfall, humidity, and UV levels.

In December, the weather is warm with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 35°C (95°F), averaging around 27°C (80°F). The month experiences light rainfall, with only 24 mm (0.9 in) of precipitation over just 2 days, and the humidity is relatively high at 70%.

January sees a slight increase in the minimum temperature, rising to 16°C (61°F), while the average temperature remains at 27°C (81°F) and the maximum drops slightly to 35°C (94°F). Rainfall increases to 29 mm (1.1 in) over 3 days, and humidity decreases to 59%, making the air feel somewhat drier compared to December. For more detailed information, you can visit Ratchathewi weather in January.

December and February exhibit relatively similar warm temperatures, with December seeing a minimum of 15°C (59°F) and an average of 27°C (80°F), while February has slightly higher minimums at 19°C (66°F) and an average of 28°C (82°F). Both months feature maximum temperatures peaking at around 35°C (95°F in December and 96°F in February). However, February experiences less precipitation at 14 mm (0.5 in) over three days compared to December's 24 mm (0.9 in) over two days, and notably, February has lower humidity at 58% compared to December's 70%. For more detailed insights on February weather, check out Ratchathewi weather in February.

In December, the weather tends to be quite warm, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 35°C (95°F) and an average of about 27°C (80°F). The month sees only about 24 mm (0.9 in) of precipitation over just 2 days, with humidity levels around 70%. In contrast, March experiences slightly higher temperatures, with minimums of 22°C (72°F) and maximums reaching 37°C (99°F), averaging 30°C (86°F). The precipitation increases significantly to 44 mm (1.7 in) over 5 days, while humidity drops to 61%. For more details on the specific weather patterns in March, you can refer to Ratchathewi weather in March.

In December, the weather tends to be warmer with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 35°C (95°F), and an average temperature of 27°C (80°F). This month experiences relatively low precipitation, totaling 24 mm (0.9 in) over just 2 days, contributing to a humid environment with consistent humidity levels around 70%.

In contrast, April brings hotter conditions, with temperatures reaching a minimum of 21°C (70°F) and soaring to a maximum of 38°C (100°F), resulting in an average of 30°C (87°F). Rainfall significantly increases in April, with 107 mm (4.2 in) of precipitation spread across 12 days, while humidity remains steady at 70%. For a detailed look at April's weather, visit Ratchathewi weather in April.

December and May exhibit significant differences in weather patterns. In December, temperatures range from a mild 15°C (59°F) at night to a warm average of 27°C (80°F) during the day, peaking at 35°C (95°F). The month sees relatively low precipitation, with only 24 mm (0.9 in) falling over just two days, accompanied by a humidity level of 70%. In contrast, May experiences a much hotter climate, with temperatures starting at a minimum of 23°C (74°F), averaging 30°C (87°F), and peaking at a scorching 40°C (103°F). This month is also characterized by significant rainfall, totaling 142 mm (5.6 in) over 19 days, and higher humidity at 80%. For more information, check Ratchathewi weather in May.

In December, the weather features a pleasantly warm climate, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 35°C (95°F) and an average of 27°C (80°F). This month sees relatively low precipitation, with only 24 mm (0.9 in) falling over just 2 days and humidity levels at about 70%. In contrast, June experiences significantly warmer temperatures, with minimums of 25°C (78°F), averages of 30°C (86°F), and maximums reaching 37°C (99°F). Additionally, June is much wetter, receiving 112 mm (4.4 in) of rainfall over 22 days, and higher humidity at 85%. For a more detailed look at the weather in June, you can visit Ratchathewi weather in June.

December and July present contrasting weather patterns in Ratchathewi. In December, temperatures range from a mild 15°C (59°F) at night to a warm average of 27°C (80°F) during the day, with maximums reaching up to 35°C (95°F). This month experiences relatively low precipitation, averaging just 24 mm (0.9 in) over two days, and a comfortable humidity level of 70%. In stark contrast, July is significantly warmer, with minimum temperatures starting at 25°C (78°F) and maxing out at 37°C (99°F). July sees much higher rainfall, totaling 159 mm (6.2 in) across 26 days, coupled with increased humidity at 86%. For more details on the weather in July, check out Ratchathewi weather in July.

December and August present distinctly different weather patterns. In December, temperatures range from a comfortable minimum of 15°C (59°F) to a pleasant average of 27°C (80°F), peaking at 35°C (95°F). The month experiences relatively low precipitation, with only 24 mm (0.9 in) of rain over 2 days and humidity levels around 70%. In contrast, August features higher temperatures, with a minimum of 25°C (77°F), an average of 29°C (85°F), and a maximum of 37°C (99°F). Rainfall is significantly greater in August, totaling 163 mm (6.4 in) across 23 days and accompanied by higher humidity at 88%. For more details on August weather in Ratchathewi, visit Ratchathewi weather in August.

In comparing the weather of December and September, December tends to be warmer overall, with average temperatures ranging from a minimum of 15°C (59°F) to a maximum of 35°C (95°F) and a lower humidity level of 70%. In contrast, September experiences higher humidity at 87%, with temperatures ranging from a minimum of 24°C (76°F) to a maximum of 36°C (97°F). Moreover, September sees significantly more rainfall, totaling 245 mm (9.6 in) over 24 days, compared to a modest 24 mm (0.9 in) over just 2 days in December. For further details, check Ratchathewi weather in September.

In comparing the weather between October and December, we see notable differences in temperature and rainfall. In December, the temperatures are milder, with a minimum of 15°C (59°F) and an average of 27°C (80°F), whereas October experiences warmer nights, with a minimum of 23°C (74°F) and an average of 29°C (84°F). Interestingly, both months share a maximum temperature of 35°C (95°F in December and 96°F in October). However, October is significantly wetter, receiving a substantial 250 mm (9.9 in) of rain over 21 days compared to December’s much drier conditions with just 24 mm (0.9 in) over 2 days. Additionally, humidity levels are higher in October at 83%, compared to 70% in December. For a closer look at October weather, you can visit Ratchathewi weather in October.

In comparing the weather of December and November, December shows a generally milder temperature range with minimums of 15°C (59°F) and averages of 27°C (80°F), while November starts with warmer minimums at 21°C (70°F) and similar maximums of 35°C (95°F). Notably, December experiences significantly less rainfall, with only 24 mm (0.9 in) over just two days compared to November's 61 mm (2.4 in) across nine days, resulting in lower overall humidity at 70% versus November's 78%. This shift to drier conditions makes December more pleasant for outdoor activities. For more details on November's weather in this region, you can visit Ratchathewi weather in November.

Compare Ratchathewi's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Ratchathewi

December in Ratchathewi offers a delightful reprieve from the sweltering heat typical of other months, with cooler temperatures and lower humidity levels making outdoor activities far more enjoyable. This month brings a comfortable average temperature that often hovers around a pleasant 27°C, making it an ideal time for exploration. With only a couple of rainy days and minimal precipitation, visitors can expect mostly sunny skies and vibrant street life. As the humidity dips to about 70%, the air feels refreshing, providing the perfect backdrop to immerse yourself in the rich culture of this bustling district. For more detailed insights into the local climate, visit Ratchathewi Climate.