December Weather in Sai Yok, Thailand

Last updated: August 27, 2025

Nestled in the heart of Thailand, Sai Yok experiences a captivating December that offers a perfect blend of warm days and cool nights. The maximum temperature can soar to 35°C (94°F), while the average rests comfortably at 25°C (77°F), ensuring a pleasant climate for outdoor adventures. As temperatures dip to a minimum of 14°C (58°F), evenings become refreshingly cool. With only 11 mm (0.4 in) of precipitation over just 2 days, the month provides ample sunshine, complemented by a humidity level of 66% that adds to the tropical charm. December in Sai Yok is a delightful time to explore its natural beauty and vibrant culture.

December Temperature in Sai Yok

In Sai Yok, Thailand, December heralds the arrival of milder temperatures, making it a delightful time to explore this scenic region. With minimum temperatures averaging around 14°C (58°F) and a comfortable average of 25°C (77°F), visitors can enjoy the cool, refreshing climate. By day, highs reach about 35°C (94°F), providing plenty of warmth without the oppressive heat experienced in the peak months of April and May. This transition in December marks a shift from the swelter of previous months, making it an ideal time for both adventure and relaxation amidst the stunning landscapes of Sai Yok. So whether you're trekking through lush jungles or visiting waterfalls, the pleasant December weather sets the perfect stage for your Thai getaway.

December Weather in Sai Yok: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Sai Yok, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sai Yok, 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).
JanFebMarAprMayJunJulAugSepOctNovDec788185858583828181817977
Data source: Temperature data for Sai Yok 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 Sai Yok

In December, Sai Yok, Thailand experiences a notable dip in precipitation, with only 11 mm (0.4 in) of rain, marking one of the driest months of the year. This contrasts sharply with the earlier months, where heavy rainfall prevails, particularly from June to September, when the area sees upwards of 134 mm on average per month. December's rainfall occurs over just 2 days, allowing for a respite from the wet season and providing a brief return to drier conditions before the circle of rainfall begins anew in the coming months. This seasonal shift highlights how Sai Yok transitions from a lush, rain-soaked landscape during the monsoon to a period of relative dryness as the year draws to a close.

December Precipitation Trends in Sai Yok

The chart displays monthly precipitation patterns in Sai Yok, 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 Sai Yok, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec14922751111341352032141735911
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Sai Yok

In December, Sai Yok experiences a noticeable drop in humidity to 66%, marking a significant shift from the peak levels seen in the summer months of July and August, where humidity soared to 89% and 90%, respectively. This decline follows the trend of decreasing humidity as the year winds down, transitioning from the lush, rain-soaked conditions of the rainy season starting in May. November sees a gradual decrease to 77%, setting the stage for December's more comfortable atmosphere. Overall, December's humidity reflects a move towards a drier climate, inviting a refreshing end to the year while still retaining a hint of the tropical warmth that characterizes this vibrant region of Thailand.

December Average Humidity in Sai Yok

This chart illustrates the average monthly humidity levels in Sai Yok, 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 Sai Yok 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 Sai Yok

As the year draws to a close, December in Sai Yok, Thailand, shows a slightly declining trend in the UV Index, which drops to 9—classified as very high—allowing for a burn time of 15 minutes. This reduction is a welcome relief from the relentless extreme levels observed from January through October, where the UV Index consistently peaked at 14. In November, it begins to taper at 10, but December's sun continues to demand caution. With such intense levels of UV radiation persisting for most of the year, those enjoying the beautiful landscapes of Sai Yok should remain vigilant and prioritize sun protection. For detailed information on the UV Index in Sai Yok, check here: Sai Yok UV Index.

Maximum UV Index Levels in Sai Yok for December

The chart shows the monthly maximum UV Index (UVI) for Sai Yok 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 Sai Yok typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec11121414141414141413109
Data source: Sai Yok 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 Sai Yok

December in Sai Yok, Thailand, boasts an impressive 315 hours of sunshine, making it a delightful month for sun-seekers. As the year comes to a close, December reflects a consistent trend of abundant sunshine, with a notable increase compared to the previous months. After peaking in March at 328 hours, the hours gradually adjust but maintain a warm presence throughout the year. Following November’s 294 hours, the sunlight in December reveals a resurgence, just in time for holiday festivities. This bright close to the year sets the stage for a perfect escape during Thailand's cool season, inviting both locals and travelers to bask in the cheerful glow of winter sunshine.

Monthly Sunshine Duration in Sai Yok: December Highlighted

The December sunshine duration represents the total number of hours Sai Yok 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.
JanFebMarAprMayJunJulAugSepOctNovDec250h298h328h312h306h291h259h253h251h274h294h315h
Data source: Sai Yok December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sai Yok During December

In December, Sai Yok, Thailand, boasts a 67% chance of sunny weather, making it one of the more favorable months for sunshine compared to the preceding rainy season. The trend suggests that while the chances of clear skies plummet during the summer months, they begin to recover significantly as the year winds down. With December's likelihood of sun falling closely behind January and February, it presents an inviting opportunity for visitors and locals alike to enjoy the outdoor beauty of this vibrant region before the cooler months set in.

Percentage of Sunny Days in December in Sai Yok

The chart illustrates the percentage of sunny days in Sai Yok 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 Sai Yok experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec64%78%55%16%32%16%9%9%8%14%28%67%
Data source: Sai Yok December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sai Yok in December

In Sai Yok, Thailand, the daylight duration exhibits a rhythmic pattern throughout the year. Starting from January to February, the days bask in 11 hours of daylight, creating a sense of consistency as the year begins. As spring approaches in March and continues through April and May, daylight stretches to a comfortable 12 hours, inviting longer outdoor pursuits. This trend of extended daylight remains steady from June to September, providing ample opportunities for exploration and enjoyment under the sun. As October arrives, the sunlight begins to wane back to 11 hours, and November follows suit, closing the year with shorter days once again. By December, Sai Yok returns to its familiar rhythm of 11 hours, reflecting nature's gentle ebb and flow in daylight and echoing the cyclical beauty of the seasons.

Average Daylight Hours in Sai Yok for December

The chart illustrates the variation in daylight duration in Sai Yok throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 22m11h 40m12h 2m12h 26m12h 46m12h 56m12h 51m12h 33m12h 11m11h 47m11h 27m11h 17m
Data source: Sai Yok daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Sai Yok

As December unfolds in Sai Yok, Thailand, the winds begin to pick up their pace, averaging 2.2 m/s (5 mph), a noticeable increase from the calmer autumn months. This subtle rise in wind speed reflects a gradual transition towards the cooler dry season, inviting both locals and visitors to embrace the refreshing breezes. Throughout the year, wind speeds have fluctuated, with peaks seen in June and July, but December stands out with its robust gusts, revitalizing the landscape and enlivening outdoor experiences. As nature awakens in response to these winds, it's the perfect time to explore Sai Yok's stunning scenery, where the gentle tug of the December winds creates a delightful atmosphere for adventure and relaxation alike.

Average December Wind Speed in Sai Yok

The chart displays monthly wind speed patterns in Sai Yok, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.01.81.51.51.72.32.21.91.51.41.82.2 m/s
Data source: Sai Yok December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Sai Yok Compares to Other Months

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

In comparing the weather patterns of December and January, both months exhibit relatively warm temperatures, with December averaging 25°C (77°F) and January slightly warmer at 25°C (78°F). While December has a minimum temperature of 14°C (58°F) and a maximum of 35°C (94°F), January sees a similar minimum of 13°C (56°F) but a slightly higher maximum of 37°C (99°F). Precipitation increases slightly from December’s 11 mm (0.4 in) over two days to 14 mm (0.6 in) across three days in January, contributing to a marginal decrease in humidity from 66% in December to 58% in January. For a more detailed look at January weather, check out Sai Yok weather in January.

In comparing the weather between December and February, December experiences slightly cooler temperatures with a minimum of 14°C (58°F) and an average of 25°C (77°F), while February sees warmer conditions, boasting a minimum of 17°C (62°F) and an average of 27°C (81°F). Max temperatures also rise in February, reaching up to 37°C (99°F) compared to December's maximum of 35°C (94°F). Precipitation levels are similar, with December having 11 mm (0.4 in) over 2 days and February experiencing 9 mm (0.3 in) over 3 days. Additionally, humidity is notably higher in December at 66%, while February's humidity dips to 59%. For more detailed insights into February weather, you can check out Sai Yok weather in February.

In December, the weather is generally milder with temperatures ranging from a minimum of 14°C (58°F) to a maximum of 35°C (94°F), and an average of 25°C (77°F). The month sees relatively low precipitation levels at 11 mm (0.4 in) over just two days, along with a humidity level of 66%. In contrast, March experiences warmer conditions, with temperatures ranging from a minimum of 18°C (65°F) to a scorching maximum of 40°C (104°F), averaging 29°C (85°F). Precipitation increases slightly to 22 mm (0.9 in) over three days, while the humidity remains a bit lower at 62%. For more detailed information, you can check Sai Yok weather in March.

In December, the weather offers a mild range of temperatures, with a minimum of 14°C (58°F) and a comfortable average of 25°C (77°F), reaching highs of 35°C (94°F). The month sees limited precipitation, with only 11 mm (0.4 in) spread over just two days, and humidity sits at a moderate 66%. In contrast, April experiences warmer conditions, with temperatures starting from a minimum of 20°C (68°F) and peaking at a scorching 41°C (106°F), averaging around 30°C (86°F). This month is significantly wetter, receiving 75 mm (2.9 in) of rainfall over 14 days, while humidity slightly increases to 69%. For more detailed information about April weather, you can check out Sai Yok weather in April.

In comparing the weather of December and May, we can see significant differences in both temperature and precipitation. December boasts a more moderate range, with minimum temperatures around 14°C (58°F) and a comfortable average of 25°C (77°F), while highs can reach up to 35°C (94°F). This month experiences minimal rainfall, with just 11 mm (0.4 in) over 2 days and a humidity level of 66%.

In contrast, May brings warmer conditions, with minimum temperatures starting at 23°C (73°F) and average highs increasing to a sweltering 40°C (104°F). The month is characterized by much higher precipitation, with 111 mm (4.4 in) falling over 19 days, leading to an increase in humidity to 79%. For a detailed look at weather conditions in May, you can check out Sai Yok weather in May.

December and June present contrasting weather patterns. In December, temperatures range from a mild 14°C (58°F) at night to a warm 35°C (94°F) during the day, with an average of 25°C (77°F). This month experiences low precipitation, with only 11 mm (0.4 in) over just 2 days, paired with a humidity level of 66%. In contrast, June sees much warmer conditions, with minimum temperatures starting at 23°C (75°F) and peaking at a scorching 38°C (100°F), averaging around 28°C (83°F). Precipitation significantly increases to 134 mm (5.3 in), falling over 21 days, and humidity rises to 87%, making the atmosphere feel much more oppressive. For more details, you can check Sai Yok weather in June.

December and July present striking differences in weather patterns. In December, temperatures range from a comfortable minimum of 14°C (58°F) to a maximum of 35°C (94°F), with an average around 25°C (77°F). The month experiences relatively low precipitation, with just 11 mm (0.4 in) over approximately 2 days and a humidity level of 66%. In contrast, July features warmer temperatures, with a minimum of 23°C (74°F) and averaging 28°C (82°F), peaking at 35°C (96°F). This month sees significantly higher rainfall, totaling 135 mm (5.3 in) across about 22 days, accompanied by increased humidity levels at 89%. For more detailed insights, you can check Sai Yok weather in July.

In December, the weather tends to be more temperate, with average temperatures ranging from a mild 14°C (58°F) to a warm 35°C (94°F), alongside relatively low humidity at 66%. Precipitation during this month is minimal, with just 11 mm (0.4 in) falling over about 2 days, making for a drier atmosphere. In contrast, August brings much warmer nights with minimum temperatures of 23°C (74°F) and average highs around 35°C (96°F). However, it is significantly wetter, with an average precipitation of 202 mm (8.0 in) spread over approximately 25 days, resulting in higher humidity levels of 90%. For more detailed information, you can check out Sai Yok weather in August.

In December, the weather is generally milder, with temperatures ranging from a minimum of 14°C (58°F) to a maximum of 35°C (94°F) and an average of 25°C (77°F). The precipitation is quite low, totaling only 11 mm (0.4 in) over just 2 days, and the humidity stands at 66%. In contrast, September is much warmer, with temperatures starting at a minimum of 23°C (73°F) and peaking at 37°C (98°F), averaging 27°C (81°F). This month sees a significant amount of rainfall, with precipitation totaling 214 mm (8.4 in) spread over 23 days, accompanied by higher humidity at 87%. For more details on September weather in Sai Yok, you can check Sai Yok weather in September.

In December, the weather is considerably warmer and drier compared to October. With temperatures ranging from a minimum of 14°C (58°F) to a maximum of 35°C (94°F), December boasts an average temperature of 25°C (77°F). The precipitation is minimal, with only 11 mm (0.4 in) recorded over just 2 days, leading to a lower humidity level of 66%.

In contrast, October experiences warmer temperatures at night, a minimum of 21°C (70°F), and an average daytime temperature of 27°C (81°F). However, it is significantly wetter, with 173 mm (6.8 in) of rain over 20 days and heightened humidity at 83%. For a more detailed comparison of October weather, you can check Sai Yok weather in October.

In December, temperatures range from a minimum of 14°C (58°F) to a maximum of 35°C (94°F), with an average temperature of 25°C (77°F). This month experiences significantly less precipitation, with only 11 mm (0.4 in) falling over just 2 days, resulting in a humidity level of 66%. In contrast, November features warmer temperatures, with minimums around 18°C (65°F) and maximums reaching 34°C (93°F), an average of 26°C (79°F), and a much higher precipitation of 59 mm (2.3 in) over 10 days, contributing to a humidity level of 77%. For a detailed look at the weather conditions in November, you can refer to Sai Yok weather in November.

Compare Sai Yok's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Sai Yok

As December rolls into Sai Yok, the weather transforms into a pleasant retreat from the summer heat, characterized by milder temperatures and reduced humidity levels. With daytime highs reaching a comfortable 35°C (94°F) and cooler nights dipping to 14°C (58°F), this month is a delightful time for outdoor exploration. Unlike the wetter months, December sees only a modest 11 mm of precipitation over just 2 days, ensuring ample sunshine for visitors. The overall 66% humidity strikes a balance, making it a perfect time to enjoy all that Sai Yok has to offer. For a more detailed understanding of the weather patterns you can expect, check out Sai Yok Climate.