Hechuan climate
Hechuan (Chongqing, China) has a monsoon-influenced humid subtropical climate (Köppen Cwa). The average temperature over the year is 19 °C66 °F, and about 1,110 mm44 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Hechuan climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 1253 | 236 | 744 | 190.8 | 7 |
| Feb | 1559 | 541 | 1050 | 200.8 | 2 |
| Mar | 2068 | 949 | 1559 | 502.0 | 0 |
| Apr | 2578 | 1458 | 2068 | 893.5 | 0 |
| May | 2984 | 1865 | 2374 | 1315.2 | 0 |
| Jun | 3188 | 2271 | 2679 | 1937.6 | 0 |
| Jul | 3493 | 2576 | 2984 | 1696.7 | 0 |
| Aug | 3493 | 2475 | 2984 | 1455.7 | 0 |
| Sep | 2984 | 2068 | 2576 | 1405.5 | 0 |
| Oct | 2374 | 1559 | 1967 | 943.7 | 0 |
| Nov | 1865 | 949 | 1457 | 431.7 | 0 |
| Dec | 1355 | 439 | 847 | 180.7 | 3 |
| Year | 3493 | 236 | 1966 | 1,11044 | 12 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 78% | 86% | 1.5 | 10:25 |
| Feb | 76% | 85% | 2.0 | 11:05 |
| Mar | 72% | 82% | 2.9 | 11:55 |
| Apr | 70% | 80% | 3.7 | 12:52 |
| May | 72% | 82% | 3.8 | 13:39 |
| Jun | 77% | 83% | 3.8 | 14:04 |
| Jul | 76% | 75% | 5.0 | 13:54 |
| Aug | 73% | 69% | 4.8 | 13:13 |
| Sep | 77% | 77% | 3.3 | 12:18 |
| Oct | 79% | 84% | 2.1 | 11:23 |
| Nov | 80% | 82% | 1.7 | 10:36 |
| Dec | 78% | 86% | 1.4 | 10:13 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Hechuan is like
The warmest month is July, with an average high of 34 °C93 °F and a low of 25 °C76 °F. The coldest is January, when highs average 12 °C53 °F and lows 2 °C36 °F. Seasons are strongly marked: the warmest month is on average 22.2 °C40 °F warmer than the coldest.
It is wet, with about 1,110 mm44 in of precipitation per year. The wettest three-month stretch is June–August, which brings 46% of the annual total. Months with less than 20 mm0.8 in on average: December–February. The wettest month is June (193 mm7.6 in), the driest is December (18 mm0.7 in).
Relative humidity ranges from 70% in April to 80% in November. The clearest skies (lowest average cloud amount, 69%) are typical of August. Average wind speed near the ground ranges from 5 km/h (3 mph) in October to 7 km/h (4 mph) in April. Daylight lasts from about 10.2 hours in December to 14.1 hours in June.
Best time to visit Hechuan
Based on these averages, the most comfortable months for sightseeing and outdoor activities are March and April and October and November: average highs of 18 °C65 °F to 25 °C78 °F with 43 mm1.7 in to 94 mm3.7 in of precipitation per month.
The most challenging month is July, which is hot, with average highs of 34 °C93 °F, very wet (169 mm6.7 in) and humid (76% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Hechuan
- Winter (December–February) — highs 1253 to 15 °C59 °F, lows 236 to 5 °C41 °F, about 19 mm0.7 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
- Spring (March–May) — highs 2068 to 29 °C84 °F, lows 949 to 18 °C65 °F, about 90 mm3.5 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 3188 to 34 °C93 °F, lows 2271 to 25 °C76 °F, about 169 mm6.7 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an umbrella or light rain jacket.
- Autumn (September–November) — highs 1865 to 29 °C84 °F, lows 949 to 20 °C68 °F, about 92 mm3.6 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an umbrella or light rain jacket.
How Hechuan compares
Compared with Chongqing, about 56 km to the southeast, Hechuan has practically the same average temperature and receives a similar amount of precipitation.
Of the 547 places in China covered by World Climates, Hechuan is the 102nd warmest by annual mean temperature and the 222nd wettest by annual precipitation. See all of them on the China climate page.
Places in other countries with the most similar temperature and rainfall pattern: Abilene (United States, Cfa), Wichita Falls (United States, Cfa) and Killeen (United States, Cfa).
The same NASA POWER grid cell also contains Beibei (pop. 247,702), Bachuan (pop. 208,520), Yangcheng (pop. 186,242) and Nanjin (pop. 143,766). Their long-term averages in this dataset are essentially the same as for Hechuan, so they do not have separate pages.
Nearby places
- Zitong 47 km · 18 °C65 °F · 1,049 mm41 in
- Huixing 48 km · 18 °C64 °F · 1,221 mm48 in
- Chongqing 56 km · 19 °C66 °F · 1,142 mm45 in
- Guangan 64 km · 18 °C65 °F · 1,157 mm46 in
- Yanjia 73 km · 18 °C65 °F · 1,180 mm46 in
- Fengcheng 79 km · 18 °C65 °F · 1,180 mm46 in
- Yongchuan 80 km · 18 °C65 °F · 1,085 mm43 in
- Suining 88 km · 18 °C65 °F · 995 mm39 in
Frequently asked questions
What is the warmest month in Hechuan?
July is the warmest month in Hechuan, with an average high of 34 °C (93 °F) and an average low of 25 °C (76 °F).
What is the coldest month in Hechuan?
January is the coldest month, with an average high of 12 °C (53 °F) and an average low of 2 °C (36 °F).
When does it rain the most in Hechuan?
June is the wettest month with about 193 mm (7.6 in) of precipitation; December is the driest with about 18 mm (0.7 in).
What is the best time to visit Hechuan?
Judging by long-term averages, the most comfortable months are March and April and October and November.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 341 m, while Hechuan lies at about 217 m. Temperatures on this page were therefore adjusted by +0.8 °C1.5 °F using the standard lapse rate of 6.5 °C per 1,000 m.