Phanom Weather in May
What's the weather like in Phanom (Surat Thani) in May 2025?
The climate in Phanom during May can be summarized as hot, humid and very wet.
May is in the spring in Phanom and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (90°F), whilst at night 23°C (73°F) is normal.
| Daytime temperature | 32°C 89.5°F |
|---|---|
| Nightly temperature | 22.9°C 73.1°F |
| Average temperature | 27.4°C 81.3°F |
| Daily sunshine | 6.6 hrs |
| Avg rainfall | 320 mm 12.6 ins |
| Rainy days | 21 days |
| Sea temperature | 30.2°C 86.3°F |
| Humidity | 83% |
| Windspeed | 5.4kph 3 mph |
On average May is the 6th wettest month of the year in Phanom with around 320mm 12.6 inches of rain making it a very wet time to visit. This rainfall is typically spread over 21 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.6 hours of sunshine per day.
May temperatures in Phanom
May rainfall
May hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Phanom in May 2025.
Other monthly averages
Phanom weather stats
| Hottest month: | April | 33.1°C 91.6°F |
|---|---|---|
| Driest month: | February | 19mm 0.7ins |
| Sunniest month: | February | 9.7hrs |
| Coldest month: | January | 30.7°C 87.3°F |
| Wettest month: | September | 391mm 15.4ins |
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