Kanchanaburi monthly weather and climate
Kanchanaburi · Western Thailand · River Kwai
Kanchanaburi has cooler mornings during the November–February dry season, while April brings intense midday heat. When the rainy season begins, waterfalls gain water and the surrounding 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 rainier months. These are historical climate averages, not a forecast for your travel dates or an indication that swimming is allowed or safe.
| Month | Travel rating | Temperature | Rainfall | Rainy days | Humidity | Sunshine | Sea conditions |
|---|---|---|---|---|---|---|---|
| January | ++ Very good | 20~33°C (68~91.4°F) | 2 mm | 1 days | 60% | 9 hours | Not applicable |
| February | ++ Very good | 22~35°C (71.6~95°F) | 10 mm | 2 days | 55% | 9 hours | Not applicable |
| March | ++ Very good | 24~37°C (75.2~98.6°F) | 30 mm | 5 days | 55% | 9 hours | Not applicable |
| April | + Good | 26~38°C (78.8~100.4°F) | 75 mm | 8 days | 58% | 9 hours | Not applicable |
| May | ± Average | 26~36°C (78.8~96.8°F) | 135 mm | 14 days | 65% | 8 hours | Not applicable |
| June | + Good | 25~35°C (77~95°F) | 105 mm | 13 days | 70% | 7 hours | Not applicable |
| July | + Good | 25~34°C (77~93.2°F) | 100 mm | 13 days | 72% | 7 hours | Not applicable |
| August | + Good | 25~34°C (77~93.2°F) | 95 mm | 14 days | 73% | 7 hours | Not applicable |
| September | ± Average | 25~34°C (77~93.2°F) | 190 mm | 18 days | 78% | 6 hours | Not applicable |
| October | ± Average | 24~32°C (75.2~89.6°F) | 170 mm | 16 days | 75% | 7 hours | Not applicable |
| November | ++ Very good | 22~32°C (71.6~89.6°F) | 45 mm | 5 days | 65% | 8 hours | Not applicable |
| December | ++ Very good | 20~32°C (68~89.6°F) | 5 mm | 1 days | 60% | 9 hours | Not applicable |
| Month | Weather and travel advice |
|---|---|
| January | Dry, cool weather brings refreshing mornings along the River Kwai. |
| February | Temperatures rise, but the weather stays dry. Conditions are 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 covered here, with intense afternoon heat during April's Songkran celebrations. |
| May | As the rainy season begins, water starts flowing in the waterfalls again. |
| June | Rain falls, but it is less intense than in coastal areas. The landscape turns green. |
| July | Humidity is high, but Erawan Falls is at its most beautiful this month. |
| August | Rain continues, and forests along the river become lush and green. |
| September | This is the wettest month, when water levels in the River Kwai are also at their highest. |
| October | Rain decreases while the landscape stays green. Waterfalls continue to flow strongly. |
| November | The transition to the dry season brings dry, comfortable weather. |
| December | Dry, cool weather makes this a good month to visit the war cemetery. |