Climate averages 1991–2020
Khlong Sam Wa weather
in December.
A hot, very dry month: one of the coolest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Khlong Sam Wa: daytime highs average 30.6°C and nights cool to about 21.2°C. By daytime temperature it is one of the coolest months of the year.
Expect about 9.7 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 19 min on an average December day.
The nearest other city in this atlas is Sai Mai (11 km away). In December its highs average 30.7°C, about as warm as Khlong Sam Wa, with 8.8 mm of rain.
Among the 46 cities listed in Thailand, Khlong Sam Wa ranks joint 9th of 46 for the warmest December highs and joint 23rd of 46 for the driest December (rainfall, lowest first). The mean December high of those 46 cities is 29.6°C; Khlong Sam Wa is 1.0°C warmer than that mean.
From December to January, average highs rise by 0.5°C to 31.1°C, and monthly rainfall rises from 9.7 mm to 17 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
Khlong Sam Wa climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 31.1°C21.2°C | 21.2°C | 17 | 3.6 | 11.411 h |
| February | 32.4°C22.9°C | 22.9°C | 16 | 3.6 | 11.712 h |
| March | 33.8°C24.9°C | 24.9°C | 49 | 8.4 | 12.012 h |
| April | 34.5°C26.1°C | 26.1°C | 81 | 12.9 | 12.412 h |
| May | 33.2°C26.1°C | 26.1°C | 150 | 22.2 | 12.813 h |
| June | 32.2°C25.8°C | 25.8°C | 141 | 22.9 | 12.913 h |
| July | 31.6°C25.4°C | 25.4°C | 154 | 24.4 | 12.913 h |
| August | 31.3°C25.2°C | 25.2°C | 165 | 25.0 | 12.613 h |
| September | 31.0°C24.7°C | 24.7°C | 254 | 26.2 | 12.212 h |
| October | 30.6°C23.8°C | 23.8°C | 183 | 20.3 | 11.812 h |
| November | 31.0°C22.7°C | 22.7°C | 39 | 6.5 | 11.511 h |
| December, selected | 30.6°C21.2°C | 21.2°C | 9.7 | 1.9 | 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
- Sai Mai in DecemberThailand · 11 kmHigh 30.7°C · Low 21.4°C · 8.8 mm rain
- Bueng Kum in DecemberThailand · 12 kmHigh 30.6°C · Low 21.5°C · 9.7 mm rain
- Nong Chok in DecemberThailand · 14 kmHigh 30.7°C · Low 20.8°C · 9.7 mm rain
- Lat Krabang in DecemberThailand · 17 kmHigh 30.7°C · Low 21.6°C · 9.7 mm rain
- Ban Khlong Prawet in DecemberThailand · 18 kmHigh 30.5°C · Low 21.7°C · 9.7 mm rain
- Chatuchak in DecemberThailand · 20 kmHigh 30.5°C · Low 21.5°C · 9.5 mm rain
- Watthana in DecemberThailand · 23 kmHigh 30.4°C · Low 21.7°C · 9.5 mm rain
- Khlong Luang in DecemberThailand · 24 kmHigh 30.9°C · Low 21.6°C · 8.8 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 Khlong Sam Wa) is explained once on the Khlong Sam Wa year overview and on the Sources, method and limits page.
Lat Krabang, Ban Khlong Prawet and Nong Chok lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.