Kanchanaburi monthly weather and climate
Kanchanaburi · Western Thailand · River Kwai
Kanchanaburi has cool mornings during the November–February dry season and intense midday heat in April. When the rainy season begins, waterfall flows increase and the landscape turns green. September brings the most rain and the highest water levels in the River Kwai.
2 mmJan10 mmFeb30 mmMar75 mmApr135 mmMay105 mmJun100 mmJul95 mmAug190 mmSep170 mmOct45 mmNov5 mmDec
When are the dry and rainy seasons?
- Best time to visit
- Nov–Feb
- Dry season
- Nov–Feb
- Rainy season
- May–Oct
- Hottest month
- Apr (38°C)
- Wettest month
- Sep (190 mm)
Monthly weather and climate
Compare hotter and wetter months in the table below. These are historical climate averages: they are not a forecast for your travel dates and do not tell you whether swimming will be possible.
| Month | Travel rating | Temperature | Rainfall | Rainy days | Humidity | Sunshine | Sea conditions |
|---|---|---|---|---|---|---|---|
| January | ++ Very good | 20~33°C | 2 mm | 1 d | 60% | 9 h | Not applicable |
| February | ++ Very good | 22~35°C | 10 mm | 2 d | 55% | 9 h | Not applicable |
| March | ++ Very good | 24~37°C | 30 mm | 5 d | 55% | 9 h | Not applicable |
| April | + Good | 26~38°C | 75 mm | 8 d | 58% | 9 h | Not applicable |
| May | ± Average | 26~36°C | 135 mm | 14 d | 65% | 8 h | Not applicable |
| June | + Good | 25~35°C | 105 mm | 13 d | 70% | 7 h | Not applicable |
| July | + Good | 25~34°C | 100 mm | 13 d | 72% | 7 h | Not applicable |
| August | + Good | 25~34°C | 95 mm | 14 d | 73% | 7 h | Not applicable |
| September | ± Average | 25~34°C | 190 mm | 18 d | 78% | 6 h | Not applicable |
| October | ± Average | 24~32°C | 170 mm | 16 d | 75% | 7 h | Not applicable |
| November | ++ Very good | 22~32°C | 45 mm | 5 d | 65% | 8 h | Not applicable |
| December | ++ Very good | 20~32°C | 5 mm | 1 d | 60% | 9 h | Not applicable |
| Month | Weather and travel advice |
|---|---|
| January | Dry, cool weather brings fresh mornings beside the River Kwai. |
| February | Temperatures rise, but conditions remain dry. The weather suits visits to the bridge and waterfalls. |
| March | March temperatures range from 24 to 37°C, with 30 mm of rainfall. Waterfall flows are still low. |
| April | This is the hottest month. Kanchanaburi is also the hottest of the 15 destinations covered in this weather guide, with intense afternoon heat during April's Songkran celebrations. |
| May | The rainy season begins, and water starts flowing through the waterfalls again. |
| June | Rain falls, but it is less intense than on the coast. The landscape turns green. |
| July | Humidity is high, but Erawan Falls is at its most beautiful. |
| August | Rain continues, and dense green forest surrounds the river. |
| September | This is the wettest month. The River Kwai also reaches its highest levels. |
| October | Rain decreases, while the landscape stays green and waterfalls flow strongly. |
| November | The transition to the dry season brings dry, pleasant weather. |
| December | Dry, cool weather makes this a good month for visiting the war cemetery. |