Climate averages 1991–2020
Chanthaburi weather
in May.
A hot, very wet month: the joint 5th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Chanthaburi: daytime highs average 30.0°C and nights cool to about 25.5°C. By daytime temperature it is the joint 5th warmest of the 12 months.
Expect about 320 mm of rain on roughly 28 days, which makes May a very wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 42 min on an average May day.
The nearest other city in this atlas is Rayong (92 km away). In May its highs average 30.7°C, 0.6°C warmer than Chanthaburi, with 220 mm of rain.
Among the 46 cities listed in Thailand, Chanthaburi ranks 45th of 46 for the warmest May highs and 46th of 46 for the driest May (rainfall, lowest first). The mean May high of those 46 cities is 32.7°C; Chanthaburi is 2.6°C cooler than that mean.
From May to June, average highs fall by 0.9°C to 29.2°C, and monthly rainfall rises from 320 mm to 384 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
Chanthaburi climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.4°C22.2°C | 22.2°C | 29 | 6.2 | 11.511 h |
| February | 30.7°C23.2°C | 23.2°C | 33 | 8.2 | 11.712 h |
| March | 30.9°C24.6°C | 24.6°C | 85 | 15.1 | 12.112 h |
| April | 31.0°C25.4°C | 25.4°C | 122 | 18.8 | 12.412 h |
| May, selected | 30.0°C25.5°C | 25.5°C | 320 | 28.2 | 12.713 h |
| June | 29.2°C25.3°C | 25.3°C | 384 | 28.4 | 12.913 h |
| July | 28.8°C25.0°C | 25.0°C | 369 | 29.6 | 12.813 h |
| August | 28.8°C24.9°C | 24.9°C | 328 | 29.2 | 12.513 h |
| September | 28.7°C24.5°C | 24.5°C | 363 | 28.8 | 12.212 h |
| October | 29.4°C24.0°C | 24.0°C | 238 | 23.0 | 11.912 h |
| November | 29.9°C23.4°C | 23.4°C | 46 | 7.9 | 11.612 h |
| December | 30.0°C22.3°C | 22.3°C | 16 | 3.2 | 11.411 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
- Rayong in MayThailand · 92 kmHigh 30.7°C · Low 26.2°C · 220 mm rain
- Paoy Paet in MayCambodia · 127 kmHigh 33.0°C · Low 25.4°C · 145 mm rain
- Battambang in MayCambodia · 131 kmHigh 34.1°C · Low 25.8°C · 115 mm rain
- Pattaya in MayThailand · 137 kmHigh 31.5°C · Low 26.8°C · 152 mm rain
- Si Racha in MayThailand · 142 kmHigh 32.1°C · Low 26.6°C · 145 mm rain
- Laem Chabang in MayThailand · 143 kmHigh 31.3°C · Low 26.8°C · 152 mm rain
- Chon Buri in MayThailand · 147 kmHigh 32.5°C · Low 26.2°C · 145 mm rain
- Kabin Buri in MayThailand · 155 kmHigh 32.5°C · Low 24.9°C · 174 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 Chanthaburi) is explained once on the Chanthaburi year overview and on the Sources, method and limits page.