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Sanmenxia Weather by Month
Average temperatures, rainfall and humidity for Sanmenxia, China, month by month, built from OpenWeather's historical records. Use it to see what a typical Sanmenxia month looks like before you travel — then check the live Sanmenxia forecast for the days ahead.
Warmest month
July
33°C average high
Coolest month
January
-5°C average low
Wettest month
September
65 mm of rain
Driest month
January
3 mm of rain
Average temperature and rainfall in Sanmenxia by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 5°C | -5°C | -18°C / 15°C | 3 mm | 62% | 7 km/h |
| February | 8°C | -2°C | -17°C / 23°C | 10 mm | 60% | 8 km/h |
| March | 16°C | 5°C | -7°C / 30°C | 30 mm | 54% | 9 km/h |
| April | 22°C | 10°C | -5°C / 35°C | 56 mm | 54% | 9 km/h |
| May | 27°C | 15°C | 4°C / 42°C | 37 mm | 54% | 10 km/h |
| June | 31°C | 20°C | 10°C / 44°C | 40 mm | 56% | 9 km/h |
| July | 33°C | 23°C | 14°C / 42°C | 59 mm | 66% | 9 km/h |
| August | 31°C | 21°C | 12°C / 43°C | 58 mm | 69% | 9 km/h |
| September | 25°C | 17°C | 7°C / 37°C | 65 mm | 71% | 8 km/h |
| October | 19°C | 10°C | -1°C / 31°C | 40 mm | 68% | 8 km/h |
| November | 12°C | 3°C | -12°C / 27°C | 21 mm | 65% | 8 km/h |
| December | 5°C | -4°C | -15°C / 20°C | 5 mm | 59% | 7 km/h |
Best time to visit Sanmenxia
The most comfortable time to visit Sanmenxia is generally April to May and September, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around September, totalling about 426 mm a year.
Travellers who prefer heat should aim for July, when highs average 33°C. September is the month to avoid if rain would spoil your plans — it averages 65 mm, roughly 19× the rainfall of January.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Sanmenxia forecast for what is happening now.