Kanchanaburi monthly weather and climate
Kanchanaburi · Western Thailand, River Kwai
Kanchanaburi has cooler mornings during its November-to-February dry season, while April brings intense midday heat. As the rainy season starts, waterfalls gain water 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
Use the table below to compare hotter and wetter months. These are historical climate averages, so they do not give a forecast for your travel dates or tell you whether you will be able to swim.
| Month | Travel rating | Temperature | Rainfall | Rainy days | Humidity | Sunshine | 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 | It is dry and cool. Mornings along the River Kwai feel fresh. |
| February | Temperatures rise, but it remains dry. The weather is good for visiting the bridge and waterfalls. |
| March | March temperatures range from 24–37°C, with 30 mm of rainfall. Waterfalls still have little water. |
| April | This is the hottest month. Kanchanaburi is also the hottest of the 15 destinations on this page, with intense afternoon heat in April, the month of Songkran. |
| May | The rainy season begins and water starts flowing in the waterfalls again. |
| June | Rain falls, but tends to be less intense than in coastal areas. The landscape turns green. |
| July | Humidity is high, but this is the month when Erawan Falls is at its most beautiful. |
| August | Rain continues and the forests along the river become lush and green. |
| September | This is the wettest month. The River Kwai also reaches its highest water levels. |
| October | Rain eases, but the landscape stays green. Waterfalls continue to flow strongly. |
| November | The transition to the dry season brings dry, pleasant weather. |
| December | This is a dry, cool month and a good time to visit the war cemetery. |