That Phanom Weather & Climate: Best Time to Visit

In That Phanom temperatures are generally consistent throughout the year. Average daytime temperatures reach a very hot 35°C (95°F) in April. In December, the coolest month of the year, temperatures drop to a comfortable 30°C (86°F).

At night, temperatures range from around 26°C (79°F) in April to 17°C (63°F) in December.

Check out our detailed temperature page for more information.

Temperature ranges by month

That Phanom experiences significant rainfall throughout the year, averaging 1718 mm (68 in) of precipitation annually. That Phanom can be quite wet during August, receiving approximately 352 mm (14 in) of precipitation over 24 rainy days.

In contrast, during the driest month (January), you will experience much drier conditions, with 6 mm (0.2 in) of precipitation spread across a single rainy day. For more details, please visit our That Phanom Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

That Phanom can be enjoyed more throughout the sunniest month of March under a blue sky, with approximately 9.2 hours of sunshine daily. In contrast, the city experiences much darker days in August, with only 3.9 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in That Phanom.

The city experiences its highest humidity in August, reaching 84%. In March, the humidity drops to its lowest level at 63%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year