Climate averages 1991–2020
Si Racha weather
in April.
A hot, wet month: the warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a hot month in Si Racha: daytime highs average 33.1°C and nights cool to about 26.4°C. By daytime temperature it is the warmest month of the year.
Expect about 90 mm of rain on roughly 14 days, which makes April a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 25 min on an average April day.
The nearest other city in this atlas is Laem Chabang (11 km away). In April its highs average 32.1°C, 1.1°C cooler than Si Racha, with 90 mm of rain.
Among the 46 cities listed in Thailand, Si Racha ranks 37th of 46 for the warmest April highs and joint 32nd of 46 for the driest April (rainfall, lowest first). The mean April high of those 46 cities is 33.9°C; Si Racha is 0.8°C cooler than that mean.
From April to May, average highs fall by 1.0°C to 32.1°C, and monthly rainfall rises from 90 mm to 145 mm.
The annual picture
April 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
Si Racha climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 31.0°C22.5°C | 22.5°C | 22 | 4.7 | 11.411 h |
| February | 31.8°C23.8°C | 23.8°C | 23 | 5.1 | 11.712 h |
| March | 32.6°C25.4°C | 25.4°C | 58 | 10.6 | 12.112 h |
| April, selected | 33.1°C26.4°C | 26.4°C | 90 | 14.1 | 12.412 h |
| May | 32.1°C26.6°C | 26.6°C | 145 | 21.2 | 12.713 h |
| June | 31.2°C26.5°C | 26.5°C | 123 | 20.9 | 12.913 h |
| July | 30.6°C26.2°C | 26.2°C | 133 | 22.5 | 12.813 h |
| August | 30.4°C26.0°C | 26.0°C | 136 | 23.3 | 12.613 h |
| September | 30.1°C25.4°C | 25.4°C | 232 | 25.1 | 12.212 h |
| October | 30.1°C24.5°C | 24.5°C | 195 | 21.7 | 11.812 h |
| November | 30.6°C23.7°C | 23.7°C | 43 | 7.1 | 11.512 h |
| December | 30.5°C22.4°C | 22.4°C | 12 | 2.6 | 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
April in nearby cities
- Laem Chabang in AprilThailand · 11 kmHigh 32.1°C · Low 26.7°C · 90 mm rain
- Chon Buri in AprilThailand · 22 kmHigh 33.8°C · Low 26.1°C · 90 mm rain
- Pattaya in AprilThailand · 27 kmHigh 32.3°C · Low 26.7°C · 90 mm rain
- Samut Prakan in AprilThailand · 59 kmHigh 33.5°C · Low 27.1°C · 67 mm rain
- Lat Krabang in AprilThailand · 63 kmHigh 34.3°C · Low 26.4°C · 81 mm rain
- Rayong in AprilThailand · 65 kmHigh 31.4°C · Low 26.2°C · 133 mm rain
- Ban Khlong Prawet in AprilThailand · 66 kmHigh 34.1°C · Low 26.7°C · 81 mm rain
- Thung Khru in AprilThailand · 68 kmHigh 33.7°C · Low 27.2°C · 68 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 Si Racha) is explained once on the Si Racha year overview and on the Sources, method and limits page.
Chon Buri lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.