Climate averages 1991–2020
Phuket weather
in May.
A hot, very wet month: the joint 3rd warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Phuket: daytime highs average 28.9°C and nights cool to about 26.6°C. By daytime temperature it is the joint 3rd warmest of the 12 months.
Expect about 266 mm of rain on roughly 25 days, which makes May a very wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 29 min on an average May day.
The nearest other city in this atlas is Surat Thani (173 km away). In May its highs average 32.1°C, 3.2°C warmer than Phuket, with 124 mm of rain.
Among the 46 cities listed in Thailand, Phuket ranks 46th of 46 for the warmest May highs and 44th of 46 for the driest May (rainfall, lowest first). The mean May high of those 46 cities is 32.7°C; Phuket is 3.7°C cooler than that mean.
From May to June, average highs fall by 0.3°C to 28.7°C, and monthly rainfall falls from 266 mm to 257 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Phuket climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.4°C25.4°C | 25.4°C | 45 | 6.9 | 11.712 h |
| February | 28.9°C25.9°C | 25.9°C | 21 | 4.1 | 11.912 h |
| March | 29.3°C26.4°C | 26.4°C | 78 | 10.4 | 12.112 h |
| April | 29.4°C26.7°C | 26.7°C | 125 | 17.9 | 12.312 h |
| May, selected | 28.9°C26.6°C | 26.6°C | 266 | 25.1 | 12.512 h |
| June | 28.7°C26.6°C | 26.6°C | 257 | 22.6 | 12.613 h |
| July | 28.3°C26.3°C | 26.3°C | 253 | 23.5 | 12.513 h |
| August | 28.1°C26.2°C | 26.2°C | 276 | 23.7 | 12.412 h |
| September | 27.8°C25.7°C | 25.7°C | 311 | 24.9 | 12.212 h |
| October | 27.7°C25.3°C | 25.3°C | 306 | 27.3 | 12.012 h |
| November | 27.9°C25.5°C | 25.5°C | 184 | 20.3 | 11.812 h |
| December | 28.1°C25.4°C | 25.4°C | 81 | 11.4 | 11.712 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Surat Thani in MayThailand · 173 kmHigh 32.1°C · Low 24.9°C · 124 mm rain
- Nakhon Si Thammarat in MayThailand · 183 kmHigh 31.3°C · Low 24.7°C · 123 mm rain
- Ban Mai in MayThailand · 249 kmHigh 30.7°C · Low 26.3°C · 120 mm rain
- Hat Yai in MayThailand · 249 kmHigh 31.4°C · Low 25.0°C · 150 mm rain
- Alor Setar in MayMalaysia · 293 kmHigh 30.5°C · Low 25.0°C · 243 mm rain
- Pendang in MayMalaysia · 312 kmHigh 30.5°C · Low 24.5°C · 237 mm rain
- Lhokseumawe in MayIndonesia · 331 kmHigh 29.8°C · Low 25.4°C · 95 mm rain
- Kota Kuala Muda in MayMalaysia · 336 kmHigh 30.3°C · Low 25.3°C · 231 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Phuket) is explained once on the Phuket year overview and on the Sources, method and limits page.