December Weather in Ratchaburi, Thailand

Last updated: August 27, 2025

December in Ratchaburi, Thailand offers a pleasant climate, with maximum temperatures reaching up to 35°C (95°F) and an average of 26°C (79°F). Nighttime brings cooler relief, as temperatures drop to a minimum of 16°C (61°F). Travelers can expect some light showers, with a total precipitation of 17 mm (0.7 in) over just three days, contributing to the region's lush greenery. Coupled with an average humidity level of 66%, December is an inviting month for both tourists and locals to enjoy outdoor activities amidst the vibrant beauty of Ratchaburi.

December Temperature in Ratchaburi

As December rolls into Ratchaburi, Thailand, the temperatures exhibit a delightful shift that heralds the cooler season. With a minimum of 16°C (61°F), the nights begin to feel refreshingly crisp, while daytime temperatures peak at a comfortable 35°C (95°F). The average temperature settles around 26°C (79°F), offering a perfect balance for both outdoor adventures and leisurely strolls. This month marks a notable dip from the sweltering highs of the previous months, especially when compared to the scorching heat of April and May. As the year winds down, Ratchaburi showcases a more temperate climate, inviting visitors to immerse themselves in its vibrant culture without the overwhelming heat.

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

The chart illustrates December temperature patterns in Ratchaburi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ratchaburi, 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).
JanFebMarAprMayJunJulAugSepOctNovDec798185878685848483828179
Data source: Temperature data for Ratchaburi 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 Ratchaburi

In December, Ratchaburi experiences a notable decrease in precipitation, with only 17 mm (0.7 in) of rain falling over approximately 3 days, signaling the end of the wetter monsoon season. This marks a sharp contrast to the region's peak rainfall months, like August and September, when accumulations soared to over 200 mm and daily rain events thrived, averaging upwards of 24 days. As the year closes, this significant drop in rain provides a brief respite, allowing the landscape to dry out and the festive season to flourish under clearer skies, setting the stage for a drier January ahead.

December Precipitation Trends in Ratchaburi

The chart displays monthly precipitation patterns in Ratchaburi, 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 Ratchaburi, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec211230881411251201672092028317
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Ratchaburi

In Ratchaburi, Thailand, December marks a noticeable transition in humidity levels as the year draws to a close. The humidity in December settles at 66%, a decrease from the more oppressive summer months of June through August, where levels peak at around 90%. As the warm monsoon season wanes in November, which holds a humidity of 77%, December ushers in a relatively drier atmosphere, signaling the arrival of cooler temperatures and fresher breezes. This shift from the sweltering 79% in May to the soothing 66% in December illustrates a clear trend towards increased comfort, inviting residents and visitors alike to enjoy the outdoor beauty of Ratchaburi during the festive season.

December Average Humidity in Ratchaburi

This chart illustrates the average monthly humidity levels in Ratchaburi, 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 Ratchaburi is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec58%59%62%69%79%87%89%90%87%83%77%66%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Ratchaburi

In Ratchaburi, Thailand, the December UV Index sees a slight decline to 9, categorized as very high, which allows for a burn time of about 15 minutes. This marks a shift from the extreme levels consistently recorded from January through November, where UV Index values hovered between 10 and 14 with a persistent burn time of just 10 minutes. Despite the reduction in UV intensity, vigilance is still essential, as the risk of sunburn remains significant. The overall trend highlights a gradual decrease in UV exposure as the year draws to a close, providing a brief respite before the extreme levels return. For more detailed information, visit Ratchaburi UV Index.

Maximum UV Index Levels in Ratchaburi for December

The chart shows the monthly maximum UV Index (UVI) for Ratchaburi 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 Ratchaburi typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec11121414141314141313109
Data source: Ratchaburi 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 Ratchaburi

In Ratchaburi, Thailand, December brings a delightful surge of sunshine, with 315 hours of bright, golden light gracing the days. This month stands as a fitting conclusion to a year marked by fluctuating sunlight, where the sun shines most generously from March to April. After hitting a peak of 333 hours in March, the hours gradually taper off during the mid-year months, before July and August reveal the least sunlight. However, December's warm embrace and robust sunshine hint at a promising start to the new year, lying comfortably above the average for the latter months. With this radiant finish, Ratchaburi invites both locals and visitors to bask in its festive warmth and revel in outdoor adventures.

Monthly Sunshine Duration in Ratchaburi: December Highlighted

The December sunshine duration represents the total number of hours Ratchaburi 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.
JanFebMarAprMayJunJulAugSepOctNovDec251h299h333h319h317h300h280h267h260h283h293h315h
Data source: Ratchaburi December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ratchaburi During December

In Ratchaburi, Thailand, December witnesses a return of sunny prospects, with a 62% chance of sunshine that mirrors the optimism found in January. Following a series of dreary months where sunlight was scarce, December stands out as a refreshing transition, indicating a trend where the latter part of the year begins to warm up with clearer skies. The significant drop in sunny days from April through November, where chances dipped as low as 8% in August, gives way to a promising finish to the year. This resurgence in sunlight not only enhances the natural beauty of Ratchaburi but also sets the stage for enjoyable outdoor activities as locals and visitors alike can bask in December’s welcoming warmth.

Percentage of Sunny Days in December in Ratchaburi

The chart illustrates the percentage of sunny days in Ratchaburi 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 Ratchaburi experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec62%77%59%18%31%16%11%8%8%14%26%62%
Data source: Ratchaburi December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ratchaburi in December

In Ratchaburi, Thailand, the daylight duration showcases a fascinating rhythm throughout the year. Starting in January and February, residents enjoy 11 hours of daylight, which persists again in October through December, suggesting a gradual descent into shorter days. As the calendar transitions into March, daylight stretches to a pleasant 12 hours, a trend that lasts from spring through summer and into early autumn. This consistent 12-hour daylight experienced from March to September offers a remarkable balance, ideal for outdoor activities and exploration. With the return of 11 hours in the final months of the year, Ratchaburi's daylight pattern reflects a harmonious cycle, gradually welcoming the cooler, shorter days of winter.

Average Daylight Hours in Ratchaburi for December

The chart illustrates the variation in daylight duration in Ratchaburi 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 41m12h 2m12h 25m12h 44m12h 53m12h 49m12h 32m12h 10m11h 48m11h 29m11h 19m
Data source: Ratchaburi daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Ratchaburi

As December sweeps into Ratchaburi, Thailand, residents experience a gentle uptick in the average wind speed, reaching 2.4 m/s (5 mph). This increase marks the highest wind speed of the year, contrasting with the milder breezes of previous months. Following a trend of fluctuating wind patterns, December's winds bring a refreshing change after a notably calm September, which recorded the lowest winds at only 1.5 m/s (3 mph). Interestingly, the latter half of the year demonstrates a moderate resurgence in wind, with June, July, and November consistently averaging around 2.1 to 2.2 m/s (5 mph). As the year closes, Ratchaburi embraces the invigorating December breeze, setting the stage for a refreshing transition into the new year.

Average December Wind Speed in Ratchaburi

The chart displays monthly wind speed patterns in Ratchaburi, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.12.02.21.61.82.22.22.01.51.72.12.4 m/s
Data source: Ratchaburi December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Ratchaburi Compares to Other Months

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

In December, the weather features a temperature range with a minimum of 16°C (61°F), an average of 26°C (79°F), and a maximum of 35°C (95°F), accompanied by moderate humidity at 66% and slight precipitation totaling 17 mm (0.7 in) over three days. Conversely, January experiences similar temperature patterns, with a minimum of 16°C (61°F) and an average of 26°C (80°F), but a slightly cooler maximum of 34°C (94°F). The month sees increased precipitation of 21 mm (0.8 in) while humidity drops to 58%. For more information, check out Ratchaburi weather in January.

In December, the weather is generally warm, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (95°F) and an average of 26°C (79°F). This month experiences about 17 mm (0.7 in) of precipitation over roughly three days, with humidity levels around 66%. In contrast, February sees slightly warmer conditions, with minimum temperatures at 19°C (67°F) and a maximum of 36°C (97°F), alongside an average temperature of 27°C (82°F). February is also drier, with only 12 mm (0.5 in) of precipitation over two days, and humidity drops to 59%. For more detailed weather insights, check out Ratchaburi weather in February.

In December, the weather is characterized by warm temperatures, with a minimum of 16°C (61°F) and an average of 26°C (79°F) reaching up to a maximum of 35°C (95°F). The month experiences relatively low precipitation at 17 mm (0.7 in) over three days and maintains a humidity level of 66%. In contrast, March offers even higher temperatures, starting from a minimum of 21°C (70°F) and averaging 30°C (86°F), with maximums soaring to 38°C (102°F). This month sees increased precipitation of 30 mm (1.2 in) over four days, while humidity drops slightly to 62%. For more detailed insights, you can check out Ratchaburi weather in March.

When comparing the weather in December and April, December tends to be cooler with average temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (95°F). The month experiences relatively low precipitation, with just 17 mm (0.7 in) over about 3 days and humidity at 66%. In contrast, April is noticeably warmer, with an average temperature ranging from a minimum of 21°C (70°F) to a maximum of 40°C (104°F). This month sees significantly more rainfall, totaling 88 mm (3.5 in) over approximately 11 days, along with a slight increase in humidity at 69%. For more details, you can check Ratchaburi weather in April.

In December, the weather is generally mild, with temperatures averaging around 26°C (79°F) and a maximum of 35°C (95°F), accompanied by relatively low precipitation of 17 mm (0.7 in) over just three days and a humidity level of 66%. In contrast, May experiences significantly warmer temperatures, with minimums around 24°C (75°F) and averages climbing to 30°C (87°F), peaking at a sweltering 40°C (105°F). May also brings much more rainfall, totaling 141 mm (5.5 in) across 20 days, and a higher humidity level of 79%. This shift in weather conditions highlights the transition from a drier, cooler December to a hot and humid May. For more detailed insights, check out Ratchaburi weather in May.

In December, the weather is typically warm with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (95°F), averaging around 26°C (79°F). The month experiences relatively low precipitation, with only 17 mm (0.7 in) over about 3 days and moderate humidity at 66%. In contrast, June presents a hotter climate, with temperatures ranging from a minimum of 25°C (77°F) to a soaring maximum of 38°C (100°F) and an average of 30°C (85°F). Rainfall is significantly higher in June, totaling 125 mm (4.9 in) over 21 days, accompanied by increased humidity at 87%. For more detailed insights, you can visit Ratchaburi weather in June.

The weather in December tends to be milder compared to July, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (95°F) and an average of 26°C (79°F). In contrast, July experiences significantly higher temperatures, with a minimum of 25°C (77°F), an average of 29°C (85°F), and a peak of 37°C (99°F). Additionally, July sees much more precipitation, totaling 120 mm (4.7 in) over 22 days, compared to December's relatively dry conditions with just 17 mm (0.7 in) spread over 3 days. The humidity is also notably higher in July at 89%, compared to December's 66%. For more information on weather patterns during this month, you can visit Ratchaburi weather in July.

When comparing the weather in December and August, notable differences emerge in temperature, precipitation, and humidity. December experiences a milder climate with minimum temperatures around 16°C (61°F) and an average of 26°C (79°F), while August is significantly warmer, with minimum temperatures starting at 24°C (76°F) and an average of 29°C (84°F). Rainfall also varies greatly; December has a low precipitation of 17 mm (0.7 in) over just three days, whereas August sees a substantial increase to 167 mm (6.6 in) across 25 days of rain. Additionally, humidity levels in December are more comfortable at 66%, compared to a much higher 90% in August. For more details, check out Ratchaburi weather in August.

In comparing the weather between December and September, a distinct contrast emerges. December boasts a milder temperature range, with minimums around 16°C (61°F) and maximums reaching up to 35°C (95°F), while September experiences much warmer conditions, with lows of 24°C (76°F) and highs peaking at 37°C (100°F). December also enjoys significantly less precipitation, averaging only 17 mm (0.7 in) over just three days, compared to September's substantial rainfall of 209 mm (8.2 in) over 24 days. Additionally, December's humidity at 66% is notably lower than September's 87%, making it feel less oppressive. For more on September weather, you can visit Ratchaburi weather in September.

In December, the weather in Ratchaburi sees a notable decrease in humidity and precipitation compared to October. With minimum temperatures around 16°C (61°F) and averages at 26°C (79°F), December is generally cooler and drier, experiencing only 17 mm (0.7 in) of rain over three days. In contrast, October is significantly warmer, with minimum temperatures of 23°C (73°F) and an average of 28°C (83°F), accompanied by heavy rainfall of 202 mm (7.9 in) spread out over 21 days and higher humidity at 83%. For more details about the October climate, visit Ratchaburi weather in October.

When comparing the weather in December to that of November, December experiences slightly cooler temperatures, with a minimum of 16°C (61°F) and an average of 26°C (79°F), compared to November's minimum of 21°C (70°F) and average of 27°C (81°F). December also has less precipitation, totaling 17 mm (0.7 in) over 3 days, while November sees significantly higher rainfall at 83 mm (3.3 in) across 10 days. Furthermore, December's humidity stands at 66%, which is notably lower than November's 77%. For more detailed information, you can visit Ratchaburi weather in November.

Compare Ratchaburi's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Ratchaburi

As December settles in, Ratchaburi experiences a delightful shift in weather, making it a prime time to visit. The temperatures are pleasantly mild, with warm days giving way to cooler nights, creating a refreshing atmosphere that contrasts with the hotter months. Rainfall is minimal, with only a few days of light precipitation, allowing for plenty of sunshine in the average humidity of 66%. This balanced climate not only enhances outdoor activities but also showcases the region's natural beauty. For more insights into Ratchaburi's climate throughout the year, be sure to check out Ratchaburi Climate.