Climate averages 1991–2020
Ban Samae Dam weather
in May.
A hot, wet month: the 2nd warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Ban Samae Dam: daytime highs average 32.8°C and nights cool to about 27.1°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 124 mm of rain on roughly 18 days, which makes May a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 45 min on an average May day.
The nearest other city in this atlas is Bang Khae (12 km away). In May its highs average 33.4°C, 0.6°C warmer than Ban Samae Dam, with 130 mm of rain.
Among the 46 cities listed in Thailand, Ban Samae Dam ranks joint 26th of 46 for the warmest May highs and joint 5th of 46 for the driest May (rainfall, lowest first). The mean May high of those 46 cities is 32.7°C; Ban Samae Dam is 0.2°C warmer than that mean.
From May to June, average highs fall by 0.9°C to 31.9°C, and monthly rainfall falls from 124 mm to 100 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
Ban Samae Dam climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.4°C22.6°C | 22.6°C | 15 | 3.0 | 11.411 h |
| February | 31.5°C24.3°C | 24.3°C | 12 | 2.6 | 11.712 h |
| March | 32.7°C26.1°C | 26.1°C | 38 | 5.9 | 12.012 h |
| April | 33.8°C27.3°C | 27.3°C | 67 | 9.7 | 12.412 h |
| May, selected | 32.8°C27.1°C | 27.1°C | 124 | 18.2 | 12.713 h |
| June | 31.9°C26.6°C | 26.6°C | 100 | 20.0 | 12.913 h |
| July | 31.3°C26.2°C | 26.2°C | 107 | 20.9 | 12.813 h |
| August | 31.0°C26.0°C | 26.0°C | 114 | 21.6 | 12.613 h |
| September | 30.5°C25.5°C | 25.5°C | 212 | 24.4 | 12.212 h |
| October | 30.1°C24.7°C | 24.7°C | 208 | 21.0 | 11.812 h |
| November | 30.4°C23.8°C | 23.8°C | 43 | 6.2 | 11.512 h |
| December | 30.1°C22.4°C | 22.4°C | 9.5 | 1.7 | 11.311 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
- Bang Khae in MayThailand · 12 kmHigh 33.4°C · Low 26.9°C · 130 mm rain
- Nong Khaem in MayThailand · 14 kmHigh 33.4°C · Low 26.7°C · 144 mm rain
- Thung Khru in MayThailand · 14 kmHigh 32.7°C · Low 27.0°C · 130 mm rain
- Phra Pradaeng in MayThailand · 18 kmHigh 33.1°C · Low 26.8°C · 130 mm rain
- Thawi Watthana in MayThailand · 22 kmHigh 33.7°C · Low 26.6°C · 130 mm rain
- Bangkok in MayThailand · 22 kmHigh 33.4°C · Low 26.5°C · 130 mm rain
- Samut Prakan in MayThailand · 23 kmHigh 32.6°C · Low 27.0°C · 124 mm rain
- Watthana in MayThailand · 26 kmHigh 33.0°C · Low 26.6°C · 130 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 Ban Samae Dam) is explained once on the Ban Samae Dam year overview and on the Sources, method and limits page.
Samut Prakan lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.