Kanchanaburi: monthly weather and climate
Kanchanaburi · Western Thailand · River Kwai
Kanchanaburi has cooler mornings during the November–February dry season, while April brings strong daytime heat. When the rainy season starts, waterfalls gain water and the landscape turns green. September has the heaviest 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 the table below to see which months are hotter or wetter. These are historical climate averages; they do not provide a forecast for your travel dates or tell you whether swimming will be permitted or safe.
| Month | Travel rating | Temperature | Rainfall | Rainy days | Humidity | Sunshine hours | Sea conditions |
|---|---|---|---|---|---|---|---|
| January | ++ Very good | 20~33°C | 2 mm | 1 days | 60% | 9 hours | Not applicable |
| February | ++ Very good | 22~35°C | 10 mm | 2 days | 55% | 9 hours | Not applicable |
| March | ++ Very good | 24~37°C | 30 mm | 5 days | 55% | 9 hours | Not applicable |
| April | + Good | 26~38°C | 75 mm | 8 days | 58% | 9 hours | Not applicable |
| May | ± Average | 26~36°C | 135 mm | 14 days | 65% | 8 hours | Not applicable |
| June | + Good | 25~35°C | 105 mm | 13 days | 70% | 7 hours | Not applicable |
| July | + Good | 25~34°C | 100 mm | 13 days | 72% | 7 hours | Not applicable |
| August | + Good | 25~34°C | 95 mm | 14 days | 73% | 7 hours | Not applicable |
| September | ± Average | 25~34°C | 190 mm | 18 days | 78% | 6 hours | Not applicable |
| October | ± Average | 24~32°C | 170 mm | 16 days | 75% | 7 hours | Not applicable |
| November | ++ Very good | 22~32°C | 45 mm | 5 days | 65% | 8 hours | Not applicable |
| December | ++ Very good | 20~32°C | 5 mm | 1 days | 60% | 9 hours | Not applicable |
| Month | Weather and travel advice |
|---|---|
| January | The weather is dry and cool, with refreshing mornings along the River Kwai. |
| February | Temperatures rise, but conditions remain dry and good for visiting the bridge and waterfalls. |
| March | March temperatures range from 24 to 37°C, with rainfall of 30 mm. Waterfalls still have little water. |
| April | This is the hottest month. Kanchanaburi is also the hottest of the 15 destinations covered here, with intense afternoon heat in April, when Songkran takes place. |
| May | As the rainy season begins, water starts flowing through the waterfalls again. |
| June | Rain falls, but it tends to be less intense than in coastal areas. The landscape turns green. |
| July | Humidity is high, but the scenery at Erawan Waterfall is at its most beautiful this month. |
| August | Rain continues, and the forests around the river become lush green. |
| September | This is the wettest month. Water levels in the River Kwai are also at their highest. |
| October | Rain decreases, but the scenery stays green and waterfalls flow strongly. |
| November | The dry season approaches, bringing dry, pleasant weather. |
| December | The weather is dry and cool. This is a good time to visit the war cemetery. |