Climate and monthly weather forecastUdon Thani, Thailand

The climate of Udon Thani

Udon Thani, in Thailand, experiences a predominant Köppen climate classification of Aw, which is defined as tropical wet and dry or savanna. This climate, typical of regions situated 17.53°N latitude and 102.79°E longitude, is characterized primarily by significant rainfall during specific periods and high temperatures throughout the year.

Throughout the year, Udon Thani experiences high temperatures. The warmest month, with an average high of 36.3°C (97.3°F), occurs in April while the coolest, December, averages a high of 29.1°C (84.4°F). The low temperatures, similarly, range from 24.9°C (76.8°F) in July and August to 16.4°C (61.5°F) in December. The city, thus, is generally hot throughout the year, experiencing minimal fluctuations in temperature between months.

Relative humidity in Udon Thani varies during the course of a year. The highest percentage of relative humidity is seen from August to October with an average rate of 81%, while February sees the lowest at 63%. Rainfall is another significant weather parameter in this region. The majority of the precipitation generally occurs during the monsoon season spanning from May to October, with the heaviest rainfall recorded in September, averaging at 235mm (9.25").

Days in Udon Thani are generally long with the shortest amount of daylight in December, at 11.1 hours, and the longest in June at 13.2 hours. However, the amount of sunshine varies, peaking at 9 hours in January and February and dipping to a low of 5 hours from June through September. Meanwhile, the UV index, a measure of the strength of the sun's harmful rays, remains consistent throughout the year.

The best time to visit Udon Thani

Those considering a visit to Udon Thani will find ideal weather conditions from December to February. During these months, Udon Thani receives the least amount of rainfall, averaging between 6mm (0.24") and 9mm (0.35"), coupled with moderate temperatures averaging between 29.1°C (84.4°F) to 32.4°C (90.3°F). The humidity is also relatively lower at this time, spanning from 65% to 63%.

The worst time to visit Udon Thani

Unfavorable weather conditions are predominant from May through September. This period is characterized by high rainfall, especially in September when it reaches a high of 235mm (9.25"). During these months, the city experiences high humidity, averaging at 78%, and reduced hours of sunshine, decreasing to an average of 5 hours per day.

Spring weather in Udon Thani

In Udon Thani, spring occurs between March and May. Temperatures during this season range from a high of 34.9°C (94.8°F) to 36.3°C (97.3°F) and low temperatures vary from 21.9°C (71.4°F) to 24.8°C (76.6°F). Rainfall starts to increase, with May experiencing the start of the monsoon season with a significant rise from 39mm (1.54") to 199mm (7.83").

Summer weather in Udon Thani

Summer spans June through August in Udon Thani. During this period, temperatures hover around a high of 33.2°C (91.8°F) to 32.6°C (90.7°F) and low temperatures range from 25°C (77°F) to 24.9°C (76.8°F). This season experiences the height of the monsoon season, with rainfall peaking to 185mm (7.28") in August.

Autumn weather in Udon Thani

Autumn in Udon Thani spans from September to November. During this period, temperatures range from highs of 32°C (89.6°F) to 30.7°C (87.3°F) and from lows of 24.6°C (76.3°F) to 19.7°C (67.5°F). Rainfall still holds significant, but starts to taper off, decreasing from 235mm (9.25") in September to 20mm (0.79") in November.

Winter weather in Udon Thani

Winter in Udon Thani, lasting from December to February, witnesses relatively lower temperatures. Highs range from 29.1°C (84.4°F) to 32.4°C (90.3°F) and lows from 16.4°C (61.5°F) to 18.9°C (66°F). This season sees the least rainfall with an average of 6mm (0.24") to 16mm (0.63"). Hence, winter presents Udon Thani in its dry and cool state.

Weather in January

In Udon Thani, Thailand, January brings a harmonious blend of mild temperatures and serene skies. This month sees an uptick in relative humidity from 65% to 63%, offering a palpable respite from the dry spell of December. The region experiences little rainfall, with January being the month with the least amount of rainfall, 6mm (0.24"). Weather in January »

Weather in February

Transitioning into February, the climate in Udon Thani takes a gentle turn to warmer conditions. The region experiences a noticeable rise in both minimum and maximum temperatures, resulting in warm days and cool nights. With a significant increase in rainfall to 16mm (0.63"), February marks the onset of the pre-monsoon period. Weather in February »

Weather in March

March in Udon Thani heralds the arrival of notably warmer weather accompanied by a marked upswing in rainfall to a substantial 39mm (1.54"). This upswing indicates the transition to the pre-monsoon phase, with both daytime and nighttime temperatures hitting new highs. Weather in March »

Weather in April

As Udon Thani steps into April, the weather becomes significantly hotter, touching the year's highest temperatures. Accordingly, days turn hotter, while nights remain warm, indicative of the peak dry season. Weather transitions are marked by heavy rainfall, hitting a yearly high at 103mm (4.06"), which is a sharp contrast to March's rainfall. Weather in April »

Weather in May

Moving into May, Udon Thani witnesses a slight dip in temperature, accompanied by a drastic surge in humidity to 74%. The city is drenched in the highest rainfall of the year at 199mm (7.83"), signifying the heavy monsoon onset. Despite the rain showers, daylight hours rise to their peak, as do the sun's lingering presence, allowing for warm, sunny afternoons. Weather in May »

Weather in June

June brings with it a subtle cooling effect to Udon Thani, with temperatures dipping slightly from the preceding month. With no significant changes to the astronomical hours of daylight, Udon Thani continues to enjoy long, sunny days, albeit with reduced illuminance. Weather in June »

Weather in July

In July, Udon Thani's weather slackens its pace, giving tourists and locals time to enjoy the tropical ambiance fully. From the temperatures to the amount of rainfall at 146mm (5.75"), the city experiences a lower intensity of weather phenomena. Weather in July »

Weather in August

August weather in Udon Thani continues to mirror that of July, with warm temperatures and copious amounts of rainfall at 185mm (7.28"). The city sees an uptick in relative humidity to 81%, reaffirming the continuation of the rain-rich monsoons. Weather in August »

Weather in September

The arrival of September in Udon Thani brings with it a retreat of the monsoon, characterized by reduced rainfall, yet it remains high at 235mm (9.25"). While temperatures remain comfortably warm during the day and at night, the city sees a drop in daylight hours. Weather in September »

Weather in October

As October sets in, Udon Thani bids goodbye to the monsoon season, marked by a significant reduction in rainfall to 123mm (4.84"), and relative humidity dipping to 76%. However, the city continues to experience warm temperatures throughout the day and night. Weather in October »

Weather in November

In November, Udon Thani transitions towards its cooler season, with decreasing temperatures, reduced rainfall to a mere 20mm (0.79"), and receding humidity. The daylight hours decrease but remain ample, providing generous amounts of sunshine that add a warm tint to the nippy weather. Weather in November »

Weather in December

Lastly, Udon Thani welcomes December with the year's coolest temperatures, paving the way for a cool winter atmosphere. With rainfall dropping further to 9mm (0.35"), the region enters a pronounced dry phase, with sunny skies and consistent daylight prevalent. Weather in December »