Best time to visit Sanmenxia
The best time to visit Sanmenxia is April–May and October, judged on twenty years of weather records and the events worth going for.
Sanmenxia, Henan, China
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | 3.1 °C / 38 °F | -4.9 °C / 23 °F | 11 mm / 0.4 in | neither best nor good |
| February | 6.9 °C / 44 °F | -2.1 °C / 28 °F | 19 mm / 0.7 in | neither best nor good |
| March | 14.5 °C / 58 °F | 4.1 °C / 39 °F | 22 mm / 0.9 in | good month |
| April | 20.5 °C / 69 °F | 9.5 °C / 49 °F | 40 mm / 1.6 in | best month |
| May | 25.3 °C / 78 °F | 14.3 °C / 58 °F | 58 mm / 2.3 in | best month |
| June | 29.4 °C / 85 °F | 19 °C / 66 °F | 64 mm / 2.5 in | good month |
| July | 29.9 °C / 86 °F | 21.6 °C / 71 °F | 129 mm / 5.1 in | neither best nor good |
| August | 28.6 °C / 83 °F | 20.8 °C / 69 °F | 100 mm / 3.9 in | neither best nor good |
| September | 23.6 °C / 74 °F | 15.7 °C / 60 °F | 123 mm / 4.8 in | good month |
| October | 18 °C / 64 °F | 9.8 °C / 50 °F | 60 mm / 2.4 in | best month |
| November | 11.2 °C / 52 °F | 3 °C / 37 °F | 27 mm / 1 in | good month |
| December | 4.9 °C / 41 °F | -3.3 °C / 26 °F | 7 mm / 0.3 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: neither
- FFebruary: neither
- MMarch: good
- AApril: best
- MMay: best
- JJune: good
- JJuly: neither
- AAugust: neither
- SSeptember: good
- OOctober: best
- NNovember: good
- DDecember: neither
- Best
- April–May, October
- Good
- March, June, September, November
Why these months
March · good
In its favour: precipitation 22 mm / 0.9 in, share of daylight that is sunny 75%, wet days 4.6 days, days with heavy rain 0.5 days, average daily high 14.5 °C / 58 °F, relative humidity 54%, average daily low 4.1 °C / 39 °F.
Against: feels like (high) 11.1 °C / 52 °F.
April · best
In its favour: feels like (high) 18.4 °C / 65 °F, average daily high 20.5 °C / 69 °F, precipitation 40 mm / 1.6 in, share of daylight that is sunny 74%, wet days 6.3 days, days with heavy rain 1.2 days, relative humidity 56%, average daily low 9.5 °C / 49 °F.
May · best
In its favour: feels like (high) 24.6 °C / 76 °F, average daily high 25.3 °C / 78 °F, precipitation 58 mm / 2.3 in, share of daylight that is sunny 71%, wet days 6.6 days, days with heavy rain 2 days, average daily low 14.3 °C / 58 °F, relative humidity 58%.
June · good
In its favour: share of daylight that is sunny 72%, precipitation 64 mm / 2.5 in, feels like (high) 30.4 °C / 87 °F, wet days 6.8 days, days with heavy rain 2.1 days, average daily high 29.4 °C / 85 °F, average daily low 19 °C / 66 °F, relative humidity 61%.
September · good
In its favour: feels like (high) 24.4 °C / 76 °F, average daily high 23.6 °C / 74 °F, share of daylight that is sunny 60%, precipitation 123 mm / 4.8 in, average daily low 15.7 °C / 60 °F, wet days 10.1 days, days with heavy rain 4.2 days.
Against: relative humidity 77%.
October · best
In its favour: feels like (high) 16.6 °C / 62 °F, average daily high 18 °C / 64 °F, precipitation 60 mm / 2.4 in, share of daylight that is sunny 64%, days with heavy rain 1.8 days, wet days 7.4 days, average daily low 9.8 °C / 50 °F, relative humidity 74%.
November · good
In its favour: precipitation 27 mm / 1 in, share of daylight that is sunny 69%, wet days 5.1 days, days with heavy rain 0.4 days, relative humidity 68%.
Against: feels like (high) 7.9 °C / 46 °F, average daily high 11.2 °C / 52 °F, average daily low 3 °C / 37 °F.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: neither
- FFebruary: good
- MMarch: best
- AApril: best
- MMay: best
- JJune: neither
- JJuly: neither
- AAugust: neither
- SSeptember: good
- OOctober: best
- NNovember: best
- DDecember: neither
- Best
- March–May, October–November
- Good
- February, September
Why these months
February · good
In its favour: precipitation 19 mm / 0.7 in, wet days 4.1 days, days with heavy rain 0.5 days, share of daylight that is sunny 74%, daylight per day 10.9 h, wind (daily max) 15 km/h / 9 mph.
Against: average daily high 6.9 °C / 44 °F, feels like (high) 2.8 °C / 37 °F, average daily low -2.1 °C / 28 °F.
March · best
In its favour: average daily high 14.5 °C / 58 °F, precipitation 22 mm / 0.9 in, wet days 4.6 days, days with heavy rain 0.5 days, feels like (high) 11.1 °C / 52 °F, average daily low 4.1 °C / 39 °F, share of daylight that is sunny 75%, daylight per day 12 h, wind (daily max) 16 km/h / 10 mph.
April · best
In its favour: average daily high 20.5 °C / 69 °F, precipitation 40 mm / 1.6 in, wet days 6.3 days, days with heavy rain 1.2 days, feels like (high) 18.4 °C / 65 °F, average daily low 9.5 °C / 49 °F, share of daylight that is sunny 74%, daylight per day 13.1 h, wind (daily max) 16 km/h / 10 mph.
May · best
In its favour: precipitation 58 mm / 2.3 in, wet days 6.6 days, days with heavy rain 2 days, average daily high 25.3 °C / 78 °F, share of daylight that is sunny 71%, daylight per day 14 h, average daily low 14.3 °C / 58 °F, feels like (high) 24.6 °C / 76 °F, wind (daily max) 16 km/h / 10 mph.
September · good
In its favour: average daily high 23.6 °C / 74 °F, share of daylight that is sunny 60%, daylight per day 12.4 h, precipitation 123 mm / 4.8 in, wet days 10.1 days, average daily low 15.7 °C / 60 °F, feels like (high) 24.4 °C / 76 °F, wind (daily max) 13 km/h / 8 mph.
Against: days with heavy rain 4.2 days.
October · best
In its favour: average daily high 18 °C / 64 °F, precipitation 60 mm / 2.4 in, wet days 7.4 days, days with heavy rain 1.8 days, feels like (high) 16.6 °C / 62 °F, average daily low 9.8 °C / 50 °F, share of daylight that is sunny 64%, daylight per day 11.3 h, wind (daily max) 13 km/h / 8 mph.
November · best
In its favour: average daily high 11.2 °C / 52 °F, precipitation 27 mm / 1 in, wet days 5.1 days, days with heavy rain 0.4 days, share of daylight that is sunny 69%, average daily low 3 °C / 37 °F, feels like (high) 7.9 °C / 46 °F, wind (daily max) 14 km/h / 9 mph, daylight per day 10.4 h.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is 伏牛山滑雪场, 118 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | -1.3 °C | 2.8 °C | 11.1 °C | 18.4 °C | 24.6 °C | 30.4 °C | 33.2 °C | 31.4 °C | 24.4 °C | 16.6 °C | 7.9 °C | 0.4 °C |
| Days with heavy rain | 0.2 days | 0.5 days | 0.5 days | 1.2 days | 2 days | 2.1 days | 4 days | 2.9 days | 4.2 days | 1.8 days | 0.4 days | 0.1 days |
| Time rain usually falls | 3 pm | 3 pm | 3 pm | 12 am | 5 pm | 4 pm | 11 am | 4 pm | 8 am | 3 pm | 10 pm | 2 am |
| Sunshine per day | 8.1 h | 8.1 h | 8.9 h | 9.6 h | 9.9 h | 10.4 h | 9.7 h | 9.4 h | 7.5 h | 7.2 h | 7.1 h | 7.8 h |
| Relative humidity | 58% | 60% | 54% | 56% | 58% | 61% | 75% | 77% | 77% | 74% | 68% | 58% |
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 52.7 µg/m³ | 47.4 µg/m³ | 44.6 µg/m³ | 38.2 µg/m³ | 36.3 µg/m³ | 34.3 µg/m³ | 30.9 µg/m³ | 30.1 µg/m³ | 33.6 µg/m³ | 36.4 µg/m³ | 40.5 µg/m³ | 46.1 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 80.4 µg/m³ | 75 µg/m³ | 68.3 µg/m³ | 55.3 µg/m³ | 53.2 µg/m³ | 46.8 µg/m³ | 44.7 µg/m³ | 44.3 µg/m³ | 48.8 µg/m³ | 52.6 µg/m³ | 58.2 µg/m³ | 75.3 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.