Haining, China experiences average highs of 21°C (70°F) and lows of 15°C (59°F) throughout the year. Rainfall is moderate, averaging about 12 rainy days per month. Average highs have warmed by 1.5°C (2.7°F) across the available records.
Haining, China Weather & Climate 2026
Monthly climate averages for Haining, China. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Mar–Sep At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5.5/10
Best: April, May, October
UV Index
6
High
Temperature 21°C / 15°C
Feels Like 22°C / 15°C
Rainy Days 12
Rainfall 135 mm
Sunshine 7 h
Humidity 77%
Wind Speed 18 km/h
Dew Point 14°C
Snow Days 1 days
Frost Days 5 days
Hottest Month
33°C
August
Avg Low27°C
Rain11days
Coldest Month
3°C
January
Avg High9°C
Rain11days
Driest Month
7days
December
Avg High11°C
Avg Low4°C
Windiest Month
19 km/h
April (Gusts 32)
Sea Temperature
8°C – 32°C
Warmest water: August (
31.7°C
)
Worst Time to Visit
Consider avoiding January, July, August due to frequent rain.
Sun Position
Sunrise 04:56
Daylight 14.1h
Sunset 19:02
Live conditions—
Haining on the map · live conditions
Haining, China
- Continent
- Asia
- Country
- China
- City
- Haining
- Population
- 70.2K
- Coordinates
- 30.54°, 120.69°
Seasonal Breakdown
Spring
Mar–May
Avg High 21°C
Avg Low 14°C
Rain 13 days/mo
2/3 best months
Summer
Jun–Aug
Avg High 31°C
Avg Low 25°C
Rain 14 days/mo
Autumn
Sep–Nov
Avg High 23°C
Avg Low 17°C
Rain 10 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 10°C
Avg Low 3°C
Rain 10 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 9°C / 3°C . Feb: 11°C / 4°C . Mar: 16°C / 9°C . Apr: 21°C / 14°C . May: 25°C / 18°C . Jun: 28°C / 23°C . Jul: 32°C / 27°C . Aug: 33°C / 27°C . Sep: 28°C / 23°C . Oct: 23°C / 17°C . Nov: 18°C / 11°C . Dec: 11°C / 4°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 87 mm. Feb: 88 mm. Mar: 129 mm. Apr: 123 mm. May: 181 mm. Jun: 355 mm. Jul: 180 mm. Aug: 125 mm. Sep: 155 mm. Oct: 73 mm. Nov: 73 mm. Dec: 55 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 75%. Feb: 76%. Mar: 76%. Apr: 75%. May: 77%. Jun: 84%. Jul: 80%. Aug: 77%. Sep: 81%. Oct: 76%. Nov: 75%. Dec: 73%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 17 km/h . Feb: 18 km/h . Mar: 19 km/h . Apr: 19 km/h . May: 19 km/h . Jun: 17 km/h . Jul: 18 km/h . Aug: 18 km/h . Sep: 18 km/h . Oct: 18 km/h . Nov: 18 km/h . Dec: 17 km/h .
Sunshine
Sunshine
Sunshine: Jan: 6h. Feb: 6h. Mar: 7h. Apr: 8h. May: 8h. Jun: 7h. Jul: 9h. Aug: 10h. Sep: 8h. Oct: 7h. Nov: 6h. Dec: 7h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 8°C . Feb: 8°C . Mar: 11°C . Apr: 17°C . May: 21°C . Jun: 26°C . Jul: 30°C . Aug: 32°C . Sep: 30°C . Oct: 25°C . Nov: 19°C . Dec: 12°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 4. Feb: UV 4. Mar: UV 6. Apr: UV 6. May: UV 7. Jun: UV 6. Jul: UV 8. Aug: UV 8. Sep: UV 6. Oct: UV 5. Nov: UV 4. Dec: UV 4.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 2 days. Feb: 1 days. Mar: 0 days. Apr: 0 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 0 days. Dec: 1 days.
Climate Trends
Average highs have warmed by 1.5°C (2.7°F) across the available records. Average rainfall is trending drier by about 29 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Aug 2025 · 34°C | Aug · 33°C |
| Coldest month | Jan 2025 · 2°C | Jan · 3°C |
| Wettest month | Jun 2025 · 420 mm | Jun · 355 mm |
| Windiest month | Jul 2025 · 24 km/h | Apr · 19 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Good April best
Excellent May best
Excellent June
Wet July
Wet August
Poor September
Good October best
Excellent November
Good December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 9°C / 3°C | 6°C / -1°C | 11days (87 mm) Wet | 5.7h Fair | 75% Muggy | 3.9 Moderate | Poor | View Details |
| February | 11°C / 4°C | 8°C / 0°C | 11days (88 mm) Wet | 5.9h Fair | 76% Humid | 4 Moderate | Poor | View Details |
| March | 16°C / 9°C | 14°C / 6°C | 14days (129 mm) Wet | 6.5h Fair | 76% Humid | 5.6 High | Good | View Details |
| April best | 21°C / 14°C | 21°C / 12°C | 12days (123 mm) Wet | 7.7h Good | 75% Muggy | 6.1 High | Excellent | View Details |
| May best | 25°C / 18°C | 27°C / 19°C | 12days (181 mm) Wet | 8h Good | 77% Humid | 6.9 High | Excellent | View Details |
| June | 28°C / 23°C | 32°C / 25°C | 17days (355 mm) Wet | 6.7h Fair | 84% Humid | 6.2 High | Wet | View Details |
| July | 32°C / 27°C | 38°C / 32°C | 13days (180 mm) Wet | 9.3h Good | 80% Humid | 7.5 Very High | Wet | View Details |
| August | 33°C / 27°C | 38°C / 32°C | 11days (125 mm) Wet | 10.3h Excellent | 77% Humid | 7.7 Very High | Poor | View Details |
| September | 28°C / 23°C | 32°C / 26°C | 13days (155 mm) Wet | 7.8h Good | 81% Humid | 6.3 High | Good | View Details |
| October best | 23°C / 17°C | 23°C / 17°C | 8days (73 mm) Wet | 6.8h Fair | 76% Humid | 4.9 Moderate | Excellent | View Details |
| November | 18°C / 11°C | 16°C / 9°C | 9days (73 mm) Wet | 6.3h Fair | 75% Muggy | 4.1 Moderate | Good | View Details |
| December | 11°C / 4°C | 8°C / 1°C | 7days (55 mm) Good | 6.5h Fair | 73% Muggy | 3.5 Moderate | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Haining are April, May, October, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Haining, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Haining is August, with average daytime highs of 33°C (91°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Haining is January, with average overnight lows of 3°C (37°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Haining is June, averaging 355mm of precipitation across 17 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Haining runs through June, March, July, September, with the heaviest rainfall in June. Based on 10-year averages for Haining.
Haining receives approximately 87 sunshine hours per year. The sunniest month is August with around 10 hours. Based on climate data for Haining.
The least favorable months to visit Haining are January, July, August, primarily due to frequent rain. For the best conditions, consider April, May, October instead.
The annual average UV index in Haining is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Haining is 77%, classified as humid. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes — sea temperatures in June, July, August, September, October average 29°C (84°F), which is warm and comfortable for swimming and water activities.
Yes, Haining receives snow. Months with snowfall average 1 snow days and 2 cm (1 in) of accumulation, with about 5 frost days during winter.
Average wind speeds in Haining are 18 km/h (11 mph). The windiest month is April with peak winds reaching 19 km/h (12 mph) (gusts up to 32 km/h / 20 mph).
Haining averages 5 clear-sky days per month with overall cloud cover around 62%. The clearest skies occur in December.
The annual average dew point in Haining is 14°C (57°F), which feels pleasant with low humidity. Outdoor activities are comfortable year-round from a humidity standpoint.
Haining has a Humid Subtropical climate, classified as Cfa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Haining ranges from 15°C (59°F) to 22°C (72°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
June is not the best time to visit Haining, with a climate score of 6.2/10. Consider visiting during April, May, October instead for better conditions.
For June in Haining, pack Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). With average highs of 28°C (82°F) and 17 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
Last updated: