Climate averages 1991–2020
Ratchaburi weather
in January.
A hot, very dry month: the 9th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in Ratchaburi: daytime highs average 30.9°C and nights cool to about 21.2°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 12 mm of rain on roughly 2 days, which makes January a very dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 25 min on an average January day.
The nearest other city in this atlas is Ban I Chang (21 km away). In January its highs average 31.4°C, about as warm as Ratchaburi, with 17 mm of rain.
Among the 46 cities listed in Thailand, Ratchaburi ranks joint 16th of 46 for the warmest January highs and 11th of 46 for the driest January (rainfall, lowest first). The mean January high of those 46 cities is 30.2°C; Ratchaburi is 0.7°C warmer than that mean.
From January to February, average highs rise by 2.0°C to 32.9°C, and monthly rainfall falls from 12 mm to 10 mm.
The annual picture
January 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
Ratchaburi climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 30.9°C21.2°C | 21.2°C | 12 | 2.2 | 11.411 h |
| February | 32.9°C22.4°C | 22.4°C | 10 | 2.4 | 11.712 h |
| March | 34.5°C24.2°C | 24.2°C | 37 | 6.3 | 12.012 h |
| April | 35.7°C25.8°C | 25.8°C | 68 | 11.1 | 12.412 h |
| May | 33.9°C26.0°C | 26.0°C | 127 | 21.9 | 12.713 h |
| June | 32.7°C25.6°C | 25.6°C | 114 | 20.4 | 12.913 h |
| July | 31.9°C25.2°C | 25.2°C | 133 | 22.1 | 12.813 h |
| August | 31.4°C25.0°C | 25.0°C | 143 | 23.0 | 12.613 h |
| September | 31.0°C24.6°C | 24.6°C | 197 | 24.1 | 12.212 h |
| October | 29.9°C23.9°C | 23.9°C | 188 | 21.1 | 11.812 h |
| November | 30.2°C22.9°C | 22.9°C | 45 | 6.4 | 11.512 h |
| December | 30.0°C21.5°C | 21.5°C | 10 | 2.2 | 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
January in nearby cities
- Ban I Chang in JanuaryThailand · 21 kmHigh 31.4°C · Low 21.3°C · 17 mm rain
- Nakhon Pathom in JanuaryThailand · 40 kmHigh 31.4°C · Low 21.5°C · 17 mm rain
- Nong Khaem in JanuaryThailand · 60 kmHigh 31.0°C · Low 22.1°C · 15 mm rain
- Ban Samae Dam in JanuaryThailand · 62 kmHigh 30.4°C · Low 22.6°C · 15 mm rain
- Bang Khae in JanuaryThailand · 66 kmHigh 31.0°C · Low 22.2°C · 15 mm rain
- Thawi Watthana in JanuaryThailand · 67 kmHigh 31.2°C · Low 21.9°C · 15 mm rain
- Thung Khru in JanuaryThailand · 76 kmHigh 30.4°C · Low 22.5°C · 15 mm rain
- Bangkok in JanuaryThailand · 78 kmHigh 31.0°C · Low 21.7°C · 15 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 Ratchaburi) is explained once on the Ratchaburi year overview and on the Sources, method and limits page.