December Weather in That Phanom, Thailand

Last updated: August 27, 2025

December in That Phanom, Thailand offers a delightful blend of warmth and comfort, with maximum temperatures reaching 35°C (95°F) and an average of 23°C (73°F), providing the perfect backdrop for outdoor adventures. Visitors can enjoy the subtle seasonal shift as nighttime temperatures can drop to a refreshing 10°C (50°F). Rain is a rarity this month, with only 6 mm (0.2 in) of precipitation and just one rainy day. The air remains pleasantly humid at 66%, adding to the invigorating atmosphere. This combination makes December an ideal time to explore the vibrant culture and natural beauty of That Phanom.

December Temperature in That Phanom

In December, That Phanom, Thailand, experiences mild temperatures that herald the onset of the cooler dry season. With a minimum of 10°C (50°F) and an average hovering around 23°C (73°F), days remain pleasant and inviting. Additionally, maximum temperatures can still reach up to 35°C (95°F), providing a warm embrace that lingers well into the later hours. Compared to the sultry highs and humidity of earlier months, December offers a refreshing respite, making it an ideal time for outdoor activities and exploring the region's natural beauty. As the year winds down, the climate shifts to welcome visitors with comfortable warmth, creating a charming backdrop for memorable experiences in this vibrant Thai town.

December Weather in That Phanom: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in That Phanom, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In That Phanom, 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).
JanFebMarAprMayJunJulAugSepOctNovDec737581838484828282807773
Data source: Temperature data for That Phanom 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.

December Precipitation in That Phanom

In That Phanom, Thailand, December marks a notable dip in precipitation, with only 6 mm (0.2 in) of rain falling on just one day. This reflects a sharp decrease compared to the preceding months, where heavy rainfall dominates, particularly from May to July when accumulated monthly totals soar above 150 mm. The transition into December signals the end of the wet season, leaving behind dry spells that characterize the region into the new year. The sparse rainfall and minimal precipitation days indicate a shift towards a drier climate as the year closes, creating a stark contrast to the humidity and frequent showers experienced just months prior.

December Precipitation Trends in That Phanom

The chart displays monthly precipitation patterns in That Phanom, 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 That Phanom, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec4103667168191394351259156226
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in That Phanom

In That Phanom, Thailand, December signals a shift towards cooler weather, with humidity levels averaging 66%. This marks a notable drop from the sweltering peaks of 92% in August and 90% in July, which are the most humid months of the year. The trend shows a steady rise in humidity starting from the dry spells of April, where it dipped to 40%, culminating in the humid rains of June and July. As the year winds down, November’s 72% brings a subtle relief before December’s slight decrease, illustrating the transition into a more comfortable climate for locals and visitors alike. This seasonal fluctuation highlights the tropical nature of the region, where humidity is a defining feature of the weather.

December Average Humidity in That Phanom

This chart illustrates the average monthly humidity levels in That Phanom, 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 That Phanom is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec59%54%45%40%65%82%90%92%86%80%72%67%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in That Phanom

In December, That Phanom, Thailand experiences a notable drop in UV Index, registering at 9, which classifies it under the very high exposure category. This slight decrease from the extreme levels observed throughout the previous months marks a subtle shift, allowing for a more tolerable outdoor experience, though caution is still advised as the burn time remains at 15 minutes. Notably, the extreme UV values peaked in March and April at 14 and 15, highlighting the region's intense sun exposure during the hotter months. As the year winds down, December provides a brief respite while still reminding visitors of the need for sun protection—a consistent theme throughout the year. For further details on UV levels, visit the That Phanom UV Index.

Maximum UV Index Levels in That Phanom for December

The chart shows the monthly maximum UV Index (UVI) for That Phanom 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 That Phanom typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec9121415141315141412109
Data source: That Phanom 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 That Phanom

In December, That Phanom basks in a generous 311 hours of sunlight, marking a vibrant close to the year. This month showcases a delightful trend of abundant sunshine, rising significantly from earlier months like August, which recorded only 226 hours. The sunny days of December contribute to a gradual increase throughout the year, with notable peaks in March at 322 hours and a steady decline into the rainy season from May until July. However, as the year shifts toward its end, the return of sunny skies in November and December invites both locals and tourists to indulge in the region's warm climate, making it a perfect time to explore the enchanting beauty of That Phanom.

Monthly Sunshine Duration in That Phanom: December Highlighted

The December sunshine duration represents the total number of hours That Phanom 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.
JanFebMarAprMayJunJulAugSepOctNovDec257h295h322h315h305h280h254h226h274h283h298h311h
Data source: That Phanom December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in That Phanom During December

In That Phanom, Thailand, the odds of enjoying sunny weather in December are quite promising, with a 73% chance of sunshine. This trend reflects a gradual increase in sunlight as the year progresses, particularly noticeable from November's 57% to December's 73%. While the peak sunny months are found earlier in the year, with 84% in February, December offers a delightful balance as the dry season sets in, making it an ideal time to soak up the sun before the weather turns more humid in the following months. Overall, December stands out as a bright spot in the latter half of the year, inviting visitors and locals alike to bask in its warmth.

Percentage of Sunny Days in December in That Phanom

The chart illustrates the percentage of sunny days in That Phanom 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 That Phanom experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec80%84%68%38%41%18%16%15%18%26%57%73%
Data source: That Phanom December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in That Phanom in December

In That Phanom, Thailand, the daylight duration throughout the year reveals an intriguing pattern. Starting with a consistent 11 hours of daylight in both January and February, the days gradually lengthen to 12 hours as spring approaches in March and remains steady through April and May. The peak of daylight arrives in June and July, offering a generous 13 hours. As summer transitions into autumn, daylight gently tapers back to 12 hours in August and September, before reverting to 11 hours in the final months. By December, the cycle completes as daylight returns to that familiar 11-hour mark, reminding us of the rhythmic ebb and flow of the seasons in this vibrant region.

Average Daylight Hours in That Phanom for December

The chart illustrates the variation in daylight duration in That Phanom throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 13m11h 34m12h 2m12h 30m12h 54m13h 6m13h12h 39m12h 12m11h 44m11h 19m11h 7m
Data source: That Phanom daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in That Phanom

In December, That Phanom, Thailand, experiences a refreshing shift in its wind patterns, with an average wind speed of 3.5 m/s (8 mph), marking one of the year's strongest breezes. This uptick in wind velocity represents a notable increase from the more tranquil months preceding it, particularly in the sweltering summer months of April and May, when speeds dipped to just 2.0 m/s (4 mph). As the year draws to a close, the invigorating winds of December herald a transition, hinting at the freshness of winter while providing a perfect backdrop for outdoor activities in this charming Thai town. Interestingly, December's wind speed not only surpasses that of November's 3.1 m/s (7 mph) but also reflects a consistent upward trend from the gentler winds earlier in the year, showcasing nature’s dynamic rhythm in this vibrant locale.

Average December Wind Speed in That Phanom

The chart displays monthly wind speed patterns in That Phanom, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.42.92.52.01.72.62.42.31.72.23.13.5 m/s
Data source: That Phanom December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in That Phanom Compares to Other Months

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

In comparing the weather between December and January, we see only slight variations. Both months have a similar average temperature of around 23°C (73°F), with December experiencing a slightly higher maximum temperature of 35°C (95°F) compared to January. While December's minimum temperature is marginally warmer at 10°C (50°F), January begins at a cooler 9°C (48°F). Precipitation is low in both months, with December receiving 6 mm (0.2 in) over one day and January slightly less at 4 mm (0.1 in) also over one day. Additionally, January features a lower humidity level at 59%, down from December's 66%. For a more detailed look at January weather, you can visit That Phanom weather in January.

In December, the weather in That Phanom is characterized by a mild temperature range, with a minimum of 10°C (50°F) and a maximum of 35°C (95°F), resulting in an average of 23°C (73°F). The month is relatively dry, receiving just 6 mm (0.2 in) of precipitation over one day, accompanied by a humidity level of 66%.

By contrast, February sees a slight increase in temperature, with a minimum of 12°C (53°F), an average of 24°C (75°F), and a peak of 37°C (99°F). Precipitation also rises to 10 mm (0.4 in), still occurring over just one day, but with a noticeable drop in humidity to 54%.

For more details on February weather in That Phanom, you can visit That Phanom weather in February.

In December, the weather in That Phanom is relatively mild, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 35°C (95°F) and an average of 23°C (73°F). The month experiences low precipitation levels, with only 6 mm (0.2 in) falling over just one day, coupled with a humidity of 66%. In contrast, March sees warmer temperatures, with a minimum of 16°C (60°F) and a maximum reaching 38°C (101°F), averaging 27°C (81°F). However, it also experiences significantly higher rainfall, totaling 36 mm (1.4 in) over six days, and lower humidity at 45%. For more detailed information on the weather in March, visit That Phanom weather in March.

When comparing the weather in December and April, we see a notable shift in temperature and precipitation patterns. In December, the temperatures range from a mild 10°C (50°F) at night to a maximum of 35°C (95°F) during the day, with average temperatures around 23°C (73°F). The month experiences very low precipitation, with only about 6 mm (0.2 in) over just one day and a relative humidity of 66%.

In contrast, April brings warmer temperatures, with minimums rising to 16°C (61°F) and daytime highs reaching up to 40°C (104°F), resulting in an average temperature of 28°C (84°F). This month is much wetter, featuring around 67 mm (2.6 in) of rain spread over 10 days and a decrease in humidity to 40%.

For more detailed weather information specific to April, you can visit That Phanom weather in April.

In December, the weather in That Phanom is characterized by warm temperatures, ranging from a minimum of 10°C (50°F) to a maximum of 35°C (95°F) with an average of 23°C (73°F). The month experiences minimal rainfall, with only 6 mm (0.2 in) over just one day and a humidity level of 66%. In contrast, May sees significantly warmer temperatures, with a minimum of 17°C (62°F), an average of 29°C (84°F), and a peak of 39°C (103°F). This month also brings a substantial increase in precipitation, totaling 168 mm (6.6 in) over 20 days, while humidity remains relatively stable at 65%. For more detailed information, you can check That Phanom weather in May.

December and June present strikingly different weather patterns. In December, temperatures range from a comfortable minimum of 10°C (50°F) to a warm maximum of 35°C (95°F), with an average of about 23°C (73°F). The month experiences minimal precipitation, averaging only 6 mm (0.2 in) over just one day, and a humidity level of 66%.

In contrast, June is considerably warmer and wetter, with temperatures starting from a minimum of 24°C (75°F) and peaking at 37°C (98°F), averaging around 29°C (84°F). This month witnesses significant rainfall, totaling 191 mm (7.5 in) over 23 days, and exhibits higher humidity at 82%. For a detailed look at what to expect, check out That Phanom weather in June.

In December, the weather is warm and relatively dry, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 35°C (95°F) and an average of 23°C (73°F). The month sees only about 6 mm (0.2 in) of rainfall over just one day, with a humidity level of 66%. In contrast, July experiences much hotter and more humid conditions, with minimum temperatures starting at 24°C (75°F) and peaking at 36°C (97°F), averaging around 28°C (83°F). This month is significantly wetter, receiving 394 mm (15.5 in) of rain spread over 26 days, resulting in a high humidity of 90%. For more detailed insights on July weather, you can check That Phanom weather in July.

When comparing the weather in December to that of August, there are marked differences in temperature and precipitation. December boasts a milder climate with temperatures ranging from a minimum of 10°C (50°F) to an average of 23°C (73°F), while August experiences warmer temperatures, recording a minimum of 22°C (72°F) and an average of 28°C (82°F). In addition to the higher temperatures in August, the month is characterized by significant rainfall, with 351 mm (13.8 in) of precipitation occurring over 28 days, compared to just 6 mm (0.2 in) over a single day in December. Moreover, the humidity is notably higher in August at 92%, contrasted with a more comfortable 66% in December. For a more detailed look at that month’s climate, see That Phanom weather in August.

In comparing the weather of December and September, notable differences emerge. December showcases milder temperatures, with a minimum of 10°C (50°F) and an average of 23°C (73°F), while September remains significantly warmer, starting at a minimum of 22°C (72°F) and reaching an average of 28°C (82°F). Both months can experience a maximum temperature of 35°C (95°F), but December features much lower precipitation at just 6 mm (0.2 in) over 1 day compared to September's substantial 259 mm (10.2 in) across 24 days. Additionally, humidity levels are higher in September at 86%, while December sees a more comfortable 66% humidity. For more insights, visit That Phanom weather in September.

December and October exhibit notable differences in weather patterns. In December, the temperatures range from a minimum of 10°C (50°F) to a maximum of 35°C (95°F), accompanied by a lower average of 23°C (73°F). With only 6 mm (0.2 in) of precipitation over just one day, December experiences a much drier climate and a humidity level of 66%. In contrast, October features warmer temperatures, with a minimum of 18°C (64°F), an average of 27°C (80°F), and a peak of 35°C (96°F). This month is significantly wetter, receiving 156 mm (6.1 in) of rain over 13 days, along with a higher humidity level of 80%. For more details, visit That Phanom weather in October.

In comparing the weather between November and December, we see a notable drop in minimum temperatures from November's 16°C (61°F) to December's 10°C (50°F), while average temperatures remain relatively close, with December averaging 23°C (73°F) compared to November's 25°C (78°F). Although December experiences slightly higher maximum temperatures, peaking at 35°C (95°F) compared to November's 36°C (97°F), it enjoys drier conditions with only 6 mm of precipitation over 1 day, in contrast to November's 22 mm over 3 days. The humidity also decreases slightly, from 72% in November to 66% in December, contributing to a more comfortable climate. For more details, you can check That Phanom weather in November.

Compare That Phanom's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in That Phanom

As December settles in That Phanom, the weather presents a delightful shift, marked by cooler temperatures and reduced rainfall compared to other months. With maximum temperatures reaching a comfortable 35°C (95°F) and an average of 23°C (73°F), this month becomes ideal for outdoor activities and exploration. The pleasant mildness, paired with just a hint of humidity at 66%, creates a refreshing atmosphere after the more humid, summer months. Notably, December experiences minimal rainfall, making it a perfect time to enjoy the local scenery. For a deeper dive into what to expect throughout the year, explore That Phanom Climate.