Climate averages 1991–2020
Samut Prakan weather
in December.
A hot, very dry month: the 11th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Samut Prakan: daytime highs average 30.3°C and nights cool to about 22.3°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 9.5 mm of rain on roughly 2 days, which makes December a very dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 20 min on an average December day.
The nearest other city in this atlas is Phra Pradaeng (10 km away). In December its highs average 30.5°C, about as warm as Samut Prakan, with 9.5 mm of rain.
Among the 46 cities listed in Thailand, Samut Prakan ranks joint 21st of 46 for the warmest December highs and joint 13th of 46 for the driest December (rainfall, lowest first). The mean December high of those 46 cities is 29.6°C; Samut Prakan is 0.7°C warmer than that mean.
From December to January, average highs rise by 0.2°C to 30.5°C, and monthly rainfall rises from 9.5 mm to 15 mm.
The annual picture
December 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
Samut Prakan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.5°C22.6°C | 22.6°C | 15 | 3.0 | 11.411 h |
| February | 31.5°C24.2°C | 24.2°C | 12 | 2.6 | 11.712 h |
| March | 32.5°C26.0°C | 26.0°C | 38 | 5.9 | 12.012 h |
| April | 33.5°C27.1°C | 27.1°C | 67 | 9.7 | 12.412 h |
| May | 32.6°C27.0°C | 27.0°C | 124 | 18.2 | 12.713 h |
| June | 31.7°C26.6°C | 26.6°C | 100 | 20.0 | 12.913 h |
| July | 31.1°C26.2°C | 26.2°C | 107 | 20.9 | 12.813 h |
| August | 30.8°C26.0°C | 26.0°C | 114 | 21.6 | 12.613 h |
| September | 30.4°C25.5°C | 25.5°C | 212 | 24.4 | 12.212 h |
| October | 30.1°C24.6°C | 24.6°C | 208 | 21.0 | 11.812 h |
| November | 30.6°C23.6°C | 23.6°C | 43 | 6.2 | 11.512 h |
| December, selected | 30.3°C22.3°C | 22.3°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
December in nearby cities
- Phra Pradaeng in DecemberThailand · 10 kmHigh 30.5°C · Low 21.9°C · 9.5 mm rain
- Thung Khru in DecemberThailand · 10 kmHigh 30.2°C · Low 22.3°C · 9.5 mm rain
- Watthana in DecemberThailand · 15 kmHigh 30.4°C · Low 21.7°C · 9.5 mm rain
- Ban Khlong Prawet in DecemberThailand · 16 kmHigh 30.5°C · Low 21.7°C · 9.7 mm rain
- Bangkok in DecemberThailand · 20 kmHigh 30.6°C · Low 21.7°C · 9.5 mm rain
- Bueng Kum in DecemberThailand · 22 kmHigh 30.6°C · Low 21.5°C · 9.7 mm rain
- Ban Samae Dam in DecemberThailand · 23 kmHigh 30.1°C · Low 22.4°C · 9.5 mm rain
- Bang Khae in DecemberThailand · 23 kmHigh 30.6°C · Low 22.1°C · 9.5 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 Samut Prakan) is explained once on the Samut Prakan year overview and on the Sources, method and limits page.
Ban Samae Dam lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.