Climate Insights for Tachilek

The climate in Tachilek is warm and mild. The average annual temperature is 24°C and approximately 2032mm of precipitation falls per year. August is the wettest month, receiving around 429mm of rainfall. Tachilek is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: April, March, May. The coldest months are January, February, December, when temperatures can drop to 13°C.

Temperatures in Tachilek vary considerably across the year, with a 22°C difference between the coldest and warmest months. The warmest month is April, when average highs reach 35°C and the mean temperature sits around 27°C. January is the coolest month, with minimum temperatures around 13°C and an average of 19°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 4°C shift in average temperatures.

Tachilek is a very wet location, receiving approximately 2032mm of precipitation annually, which averages out to around 169mm per month. The wettest month is August, averaging 429mm of rainfall. July and June also tend to see above-average precipitation. The driest month is February, with just 10mm. That's 420mm less than August, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Tachilek is relatively calm, with an average annual wind speed of 1km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 1km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 0km/h gap between the calmest and windiest months.

It is currently summer in Tachilek, which began on June 21, 2026. Tachilek is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in April at around 35°C, while the coldest stretch bottoms out in January near 13°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.

The best time to visit Tachilek is during January, February, March, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 32mm per month. By contrast, April can be uncomfortably hot with temperatures reaching 35°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Tachilek based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.