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Samut Prakan weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Samut Prakan?
For a warm holiday, the best week has been 27 December – 2 January (Weather Index 92). Favourable start dates for a 7-day trip run from 14 December to 31 December. April, May and June are warmest (33°C), December is driest and February, March and April have the most sun.
- Warmest
- April, May and June 33°C
- Coolest
- September to January 31°C
- Driest
- December 9% rain-day chance
- Wettest
- September 83% rain-day chance
- Sunniest
- February, March and April 11 hours a day
A rain day has 1 mm or more, snow included, so a short shower counts. Monthly averages below give the amounts.
Monthly averages in Samut Prakan
Samut Prakan historical monthly estimates, 2016–2025. Temperatures and sunshine are daily averages.
| Month | High (°C) | Low (°C) | Rain-day chance (%) | Expected rain days | Precipitation (mm/month) | Sunshine (hours/day) |
|---|---|---|---|---|---|---|
| January | 30.8 | 23.6 | 13.2 | 4.1 | 23.3 | 10.4 |
| February | 31.5 | 24.9 | 16.1 | 4.5 | 25.0 | 10.7 |
| March | 32.5 | 27.0 | 21.6 | 6.7 | 38.2 | 11.0 |
| April | 33.3 | 27.9 | 34.0 | 10.2 | 71.4 | 11.1 |
| May | 33.0 | 28.0 | 59.7 | 18.5 | 142.0 | 10.2 |
| June | 32.6 | 28.0 | 62.0 | 18.6 | 96.2 | 10.0 |
| July | 31.8 | 27.5 | 72.9 | 22.6 | 149.6 | 8.9 |
| August | 31.9 | 27.4 | 66.5 | 20.6 | 117.7 | 8.9 |
| September | 31.3 | 26.8 | 83.3 | 25.0 | 241.0 | 8.5 |
| October | 31.3 | 26.2 | 67.4 | 20.9 | 196.0 | 9.3 |
| November | 31.4 | 25.2 | 32.0 | 9.6 | 65.4 | 9.8 |
| December | 30.8 | 23.6 | 9.0 | 2.8 | 17.6 | 10.1 |
Each month averages its own days. Precipitation includes snow. About the data
Sources
Open-Meteo · 1 Jan 2016 – 31 Dec 2025
- Open-Meteo Historical Weather API
- Local days, 2016–2025, every year weighted equally. Each weekly chart averages its own seven days, without smoothing.
- Shading shows the 10th–90th percentile of past days, not forecast confidence.
- A rain day has at least 1 mm, snow included. The last weekly period has eight days.
- Wind is the average daytime (10:00–18:00) maximum, not gusts. Daylight is calculated from latitude. Missing readings stay blank.
- Mugginess (dew point) comes from the original daily summaries, on UTC days.
- The live two-week forecast comes from the Open-Meteo Weather Forecast API. The Weather Index does not use it.