December Weather in Si Racha, Thailand

Last updated: August 27, 2025

In Si Racha, Thailand, December brings a delightful winter warmth, with maximum temperatures reaching up to 35°C (96°F) and an average of 27°C (81°F), offering the perfect environment for outdoor activities. Nights cool down to a refreshing minimum of 16°C (61°F), providing a comfortable respite. With an average precipitation of 28 mm (1.1 in) over just 3 days, this month features low rainfall, making it an ideal time for exploration. The humidity level sits at a moderate 70%, contributing to a pleasant atmosphere, perfectly suited for both relaxation and adventure along the beautiful coast.

December Temperature in Si Racha

In December, Si Racha, Thailand, experiences a delightful transition as temperatures begin to cool slightly from the previous months. With minimums dropping to a refreshing 16°C (61°F) and average highs still reaching 35°C (96°F), this month offers a pleasant blend of warmth and mildness. The average temperature hovers around 27°C (81°F), making it an ideal time for outdoor activities and exploration. As the last month of the year, December brings the promise of sunny skies and a comfortable climate, inviting visitors to relish the stunning beaches and vibrant culture of this coastal gem.

December Weather in Si Racha: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Si Racha, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Si Racha, 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).
JanFebMarAprMayJunJulAugSepOctNovDec818284858585848483838281
Data source: Temperature data for Si Racha 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 Si Racha

In Si Racha, Thailand, December typically marks a transition towards drier conditions, with average precipitation recorded at 28 mm (1.1 in) over just 3 days of rain. This significant decrease in rainfall follows the earlier peak months of the monsoon season, particularly September, which sees a staggering 262 mm (10.3 in) over 25 rainy days. As the year draws to a close, the notably lower precipitation levels in December suggest a shift from the lush, rain-soaked landscape of mid-year to a more moderate dry period, making it a favorable time for outdoor activities and exploration. This trend reflects the tropical climate's characteristic seasonal variations, offering a brief respite before the year begins anew.

December Precipitation Trends in Si Racha

The chart displays monthly precipitation patterns in Si Racha, 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 Si Racha, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec2727611231661091681602632285928
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Si Racha

As the year winds down, December in Si Racha, Thailand experiences a notable dip in humidity, settling at a comfortable 70%. This marks a shift from the peak levels typically observed in the mid-year months, where humidity soars to an impressive 88% in August. The transition from the sweltering humidity of late summer and early autumn begins to mellow in early December, reflecting the drop from 78% in November. This change signifies a gradual easing of the humid conditions that have dominated the rainy season, bringing a refreshing reprieve before the dry months ahead. As locals and visitors relish the less oppressive atmosphere, December stands out as a time when the tropical heat becomes more bearable, making it an ideal month for exploration and enjoyment in this beautiful coastal region.

December Average Humidity in Si Racha

This chart illustrates the average monthly humidity levels in Si Racha, 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 Si Racha 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 Si Racha

In December, Si Racha, Thailand, experiences a UV Index of 9, categorizing the exposure as very high and indicating a burn time of 15 minutes. This slightly lower index marks a gradual decline from the extreme levels seen throughout the peak months, where values consistently reached 14 from March to July, prompting cautionary measures against sun damage. Notably, while the UV Index dips toward the year’s end, exposure remains significant, especially when considering that months like January and November still command a very high index of 10. As year-round sun seekers gear up for outdoor activities, it's essential to stay informed about UV levels. For more detailed insights, visit Si Racha UV Index.

Maximum UV Index Levels in Si Racha for December

The chart shows the monthly maximum UV Index (UVI) for Si Racha 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 Si Racha typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10131414141314141313109
Data source: Si Racha 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 Si Racha

December in Si Racha, Thailand, ushers in a warm embrace of sunlight, with 317 hours illuminating the month, making it one of the sunniest times of the year. Following a trend of diminishing daylight from the peak of 336 hours in March, December stands out as a vibrant conclusion to the year, surpassing the winter months with a substantial amount of sunshine. Notably, this month reflects a consistent warmth compared to the previous three months, all of which maintained over 290 hours. As the year draws to a close, December’s bright days invite both tourists and locals to bask in the beauty of Si Racha's coastal charm, making it an ideal time to soak up the sun.

Monthly Sunshine Duration in Si Racha: December Highlighted

The December sunshine duration represents the total number of hours Si Racha 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.
JanFebMarAprMayJunJulAugSepOctNovDec252h298h336h321h322h305h287h287h267h284h298h317h
Data source: Si Racha December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Si Racha During December

In December, Si Racha, Thailand, enjoys a 58% chance of sunny weather, making it a favorable time for visitors seeking sunshine. This represents a slight increase from the previous month, November, which had only a 25% likelihood of clear skies. Analyzing the trend throughout the year, December stands out as one of the transition months where the sunshine begins to shine more brightly compared to the humid, rainy period of mid-year. However, it’s still notably less sunny than the peak months of January and February, with chances of sun reaching 57% and 71%, respectively. As the year wraps up, December offers a delightful balance of warmth and sun, making it an appealing destination for travelers looking to escape the winter chill.

Percentage of Sunny Days in December in Si Racha

The chart illustrates the percentage of sunny days in Si Racha 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 Si Racha experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec57%71%53%16%31%19%12%9%9%12%25%59%
Data source: Si Racha December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Si Racha in December

In Si Racha, Thailand, the changing daylight duration throughout the year paints a fascinating picture of seasonal transitions. Beginning in January and February, residents enjoy a consistent 11 hours of daylight, which gradually increases to 12 hours from March through August, offering an abundance of sunlight during the peak of the dry season. As the wet season approaches, daylight begins to wane again, returning to 11 hours in both October and November. By December, the cycle completes itself, with daylight once more at 11 hours, suggesting a rhythmic balance that characterizes this coastal town’s climate. This pattern not only reflects the natural ebb and flow of the seasons but also enhances the beauty of Si Racha, inviting both locals and visitors to savor the distinct qualities of each month.

Average Daylight Hours in Si Racha for December

The chart illustrates the variation in daylight duration in Si Racha throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 25m11h 41m12h 2m12h 25m12h 43m12h 53m12h 48m12h 32m12h 10m11h 48m11h 29m11h 20m
Data source: Si Racha daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Si Racha

In December, the wind in Si Racha, Thailand, picks up noticeably, with an average speed of 3.2 m/s (7 mph), matching the breezy heights seen in June and July. This uptick marks a refreshing change after the lighter winds of the earlier months, where speeds hovered around 1.9 to 2.8 m/s. As the year draws to a close, the increasing winds signal a vibrant shift, enticing both locals and visitors to embrace the invigorating outdoor atmosphere. The trend of rising wind speeds during December not only enhances the coastal charm of Si Racha but also paves the way for enjoyable water activities and exploration, making it a perfect time to revel in the beauty of this coastal paradise.

Average December Wind Speed in Si Racha

The chart displays monthly wind speed patterns in Si Racha, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.92.42.71.92.33.23.02.82.12.32.83.2 m/s
Data source: Si Racha December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Si Racha Compares to Other Months

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

In December, temperatures typically range from a minimum of 16°C (61°F) to a maximum of 35°C (96°F), with an average of 27°C (81°F). The month experiences about 28 mm of precipitation over roughly three days, contributing to a higher humidity level of 70%. In contrast, January sees a slight increase in minimum temperature, with a low of 17°C (62°F) and the same maximum and average temperatures as December. Precipitation decreases slightly to 27 mm over about four days, while humidity drops to 59%. For a more detailed look at January weather, visit Si Racha weather in January.

In December, the weather tends to be warm with a minimum temperature of 16°C (61°F) and an average of 27°C (81°F), peaking at a maximum of 35°C (96°F). Precipitation is modest, averaging 28 mm (1.1 in) over three days, accompanied by a higher humidity level of 70%. In contrast, February sees slightly warmer temperatures with a minimum of 19°C (66°F) and an average of 28°C (82°F), while still reaching a maximum of 35°C (95°F). The rainfall decreases slightly to 27 mm (1.1 in) spread over five days, and humidity drops to 58%. For more detailed insights, you can check out Si Racha weather in February.

In December, the weather features a minimum temperature of 16°C (61°F) and an average of 27°C (81°F), peaking at a maximum of 35°C (96°F). This month sees relatively low precipitation of 28 mm (1.1 in) over just 3 days, coupled with a higher humidity level of 70%. In contrast, March experiences warmer conditions, with a minimum temperature of 22°C (72°F), an average of 29°C (85°F), and a maximum reaching 36°C (97°F). However, March is also wetter, receiving 60 mm (2.4 in) of rain throughout 11 days, though the humidity decreases to 61%. For a more detailed look at the conditions, check out Si Racha weather in March.

In December, the weather is generally warm and dry, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (96°F). There is minimal precipitation, averaging just 28 mm (1.1 in) over about 3 days, and the humidity remains steady at around 70%. In contrast, April sees slightly warmer temperatures, with a minimum of 20°C (67°F) and highs reaching up to 37°C (99°F). However, it also experiences significantly more rainfall, totaling 122 mm (4.8 in) over 18 days, while maintaining the same humidity level of 70%. For more detailed insights, you can visit Si Racha weather in April.

December and May present contrasting weather conditions. In December, temperatures range from a mild 16°C (61°F) to a warm 35°C (96°F), with an average of 27°C (81°F) and relatively low humidity at 70%. Precipitation is minimal, with only 28 mm (1.1 in) over three days. In contrast, May is notably warmer, with temperatures starting at a minimum of 22°C (72°F) and peaking at 37°C (99°F), averaging 30°C (86°F). The humidity increases to 80%, and rainfall becomes significantly more frequent—notably, there are 22 rainy days with total precipitation reaching 166 mm (6.5 in). For a detailed look at May's climate, you can visit Si Racha weather in May.

When comparing the weather in December and June, notable differences arise in temperature, precipitation, and humidity. December tends to be milder, with average temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (96°F), and it experiences only 28 mm (1.1 in) of precipitation over three days. In contrast, June sees warmer temperatures, with a minimum of 25°C (77°F) and an average of 30°C (86°F), but it also brings significantly more rain, totaling 109 mm (4.3 in) across 22 days. Additionally, June's humidity levels rise to 85%, creating a more humid climate compared to the 70% humidity of December. For a detailed look at the weather specifics, you can explore Si Racha weather in June.

In December, the weather tends to be more moderate, with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (96°F) and an average of 27°C (81°F). This month experiences relatively low precipitation with only 28 mm (1.1 in) over about 3 days, resulting in a humidity level of 70%. In contrast, July is much warmer and wetter, featuring a temperature range from a minimum of 25°C (77°F) to a maximum of 36°C (97°F) and an average of 29°C (85°F). The month sees significant rainfall, with 168 mm (6.6 in) spread over 25 days, leading to higher humidity levels of 86%. For more detailed information on July weather, you can check Si Racha weather in July.

In December, the weather features a minimum temperature of 16°C (61°F) and an average of 27°C (81°F), reaching a maximum of 35°C (96°F). The month experiences relatively low precipitation at 28 mm (1.1 in) over just three days, coupled with a humidity level of 70%. In contrast, August is noticeably warmer, with a minimum temperature of 24°C (76°F), an average of 29°C (84°F), and consistent highs of 35°C (96°F). However, it is much wetter during this month, receiving 160 mm (6.3 in) of rain over 24 days, and the humidity spikes to 88%. For a detailed overview of the weather in August, visit Si Racha weather in August.

When comparing December and September weather, we see notable differences in temperature and precipitation patterns. December enjoys a more moderate climate with minimum temperatures around 16°C (61°F) and an average of 27°C (81°F), while September's minimum is significantly higher at 24°C (76°F) and averages 28°C (83°F). Both months reach similar maximum temperatures, peaking at 35°C (95°F to 96°F). However, September is marked by heavy rainfall, accumulating 262 mm (10.3 in) over 25 days, in stark contrast to December's lighter 28 mm (1.1 in) over just 3 days. Additionally, humidity levels are higher in September at 87%, compared to December's 70%. For a detailed look at September's weather, visit Si Racha weather in September.

When comparing the weather in December and October, December tends to be slightly cooler, with average temperatures ranging from a minimum of 16°C (61°F) to a maximum of 35°C (96°F). In contrast, October sees higher minimum temperatures of 23°C (74°F) and a similar maximum of 36°C (96°F), making it feel warmer overall. Additionally, October experiences significantly more rainfall, with 228 mm (9.0 in) over 23 days, while December has only 28 mm (1.1 in) across just 3 days. The humidity is also higher in October at 83%, compared to 70% in December, contributing to a noticeably different atmosphere. For more details, you can check Si Racha weather in October.

In comparing the weather of December and November, we see that December experiences slightly lower temperatures, with a minimum of 16°C (61°F) and an average of 27°C (81°F), while November has a higher minimum of 22°C (72°F) and an average of 28°C (83°F). Both months share the same maximum temperature of 35°C (96°F). However, December receives significantly less precipitation at 28 mm (1.1 in) over just 3 days, compared to November's 59 mm (2.3 in) over 10 days. Additionally, humidity levels are slightly lower in December at 70%, contrasting with November's 78%. For more detailed information about November weather, you can check Si Racha weather in November.

Compare Si Racha's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Si Racha

In December, Si Racha experiences a delightful shift in weather, characterized by a perfect blend of warm days and cooler nights. With average temperatures around 27°C (81°F), visitors can enjoy pleasant outdoor activities, especially with a maximum of 35°C (96°F) on the hottest days. Unlike the heavy rains of other months, December sees minimal precipitation, with just a light 28 mm (1.1 in) spread over only three days, making it an ideal time for exploration. The humidity level remains at a comfortable 70%, providing a refreshing break from the usual swelter. For those planning a trip, understanding the unique climate of this month can greatly enhance your experience; learn more about it at Si Racha Climate.