Hainan weather in October
In October, Hainan sees average daytime highs of 10°C and overnight lows near -0°C, with 37 mm of precipitation across 6.9 wet days and about 10.6 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.
Highs ease over the month, from about 15°C in the first days to 5°C by the end. The sky is clear or mostly clear about 47% of the time in October, and the air most often feels dry.
Daylight stretches from about 11 h 30 min at the start of October to 9 h 48 min by month's end. Set against the rest of the year, October is Hainan's 4th-clearest and 3rd-windiest month. For the whole year in context, see Hainan's year-round climate.
- Daytime high
- 10°
- 7th warmest
- Overnight low
- -0°
- 6th coldest
- Precipitation
- 37 mm
- 6.9 wet days
- Daylight
- 10 h 36 min
- 5:59 AM – 4:35 PM
- Cloud cover
- 47%
- 4th clearest
- Wind
- 12 km/h
- 3rd windiest
- Solar energy
- 2.86 kWh/m²
- Travel score
- 2.7
- out of 10
- Air quality
- Elevated
- PM2.5 25 µg/m³ · 2018
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in October
Highs ease over the month, from about 15°C in the first days to 5°C by the end.
A typical October day in Hainan reaches about 10°C in the afternoon and slips back to -0°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 17°C. Set against its neighbours, October runs about 9°C cooler than September and about 13°C warmer than November.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 10 | 10 | 10 | 9 | 9 | 9 | 8 | 8 | 7 | 7 | 7 | 6 | 6 | 5 | 5 | 5 |
| Avg low (°C) | 4 | 4 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | -1 | -1 | -1 | -2 | -2 | -2 | -2 | -3 | -3 | -3 | -4 | -4 | -4 | -5 | -5 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 16 | 4 |
| 2 | 15 | 4 |
| 3 | 15 | 4 |
| 4 | 15 | 3 |
| 5 | 14 | 3 |
| 6 | 14 | 3 |
| 7 | 14 | 2 |
| 8 | 13 | 2 |
| 9 | 13 | 2 |
| 10 | 13 | 2 |
| 11 | 12 | 1 |
| 12 | 12 | 1 |
| 13 | 12 | 1 |
| 14 | 11 | 0 |
| 15 | 11 | 0 |
| 16 | 10 | 0 |
| 17 | 10 | -1 |
| 18 | 10 | -1 |
| 19 | 9 | -1 |
| 20 | 9 | -2 |
| 21 | 9 | -2 |
| 22 | 8 | -2 |
| 23 | 8 | -2 |
| 24 | 7 | -3 |
| 25 | 7 | -3 |
| 26 | 7 | -3 |
| 27 | 6 | -4 |
| 28 | 6 | -4 |
| 29 | 5 | -4 |
| 30 | 5 | -5 |
| 31 | 5 | -5 |
How October really feels in Hainan
Once humidity and wind are folded in, October averages 0 days that feel above 32°C and 27 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in October is cold — wind chill drags the overnight "feels like" below the raw low.
Hainan weather by month
How October compares with the rest of the year at a glance. October is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | -15° / -26° | 4 | 1.1 | 1.6 | 8.7 | 0.0 |
| Feb | -9° / -22° | 6 | 1.6 | 1.9 | 10 | 0.0 |
| Mar | 1° / -11° | 16 | 3.6 | 3.3 | 11.6 | 0.1 |
| Apr | 12° / 0° | 33 | 5.6 | 1.2 | 13.3 | 3.2 |
| May | 20° / 8° | 62 | 9.9 | 0.1 | 14.8 | 6.2 |
| Jun | 25° / 15° | 101 | 13.3 | 0 | 15.6 | 6.1 |
| Jul | 27° / 18° | 162 | 14.7 | 0 | 15.3 | 5.8 |
| Aug | 25° / 16° | 143 | 13.6 | 0 | 14 | 6.2 |
| Sep | 20° / 8° | 73 | 9.1 | 0 | 12.4 | 6.4 |
| Oct | 10° / -0° | 37 | 6.9 | 0.9 | 10.6 | 2.7 |
| Nov | -3° / -12° | 14 | 3.2 | 2.9 | 9.1 | 0.0 |
| Dec | -13° / -23° | 8 | 2.6 | 3.4 | 8.3 | 0.0 |
Cloud cover in October
The sky is clear or mostly clear about 47% of the time in October.
Beyond those clear spells, partly cloudy skies cover about 14% of October, with mostly cloudy or overcast conditions the remaining 40%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 57 | 58 | 58 | 58 | 59 | 59 | 59 | 59 | 60 | 60 | 61 | 61 | 62 | 62 | 62 | 62 | 62 | 62 | 61 | 61 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 |
| Cloudier (%) | 43 | 42 | 42 | 42 | 41 | 41 | 41 | 41 | 40 | 40 | 39 | 39 | 38 | 38 | 38 | 38 | 38 | 38 | 39 | 39 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 57 | 43 |
| 2 | 58 | 42 |
| 3 | 58 | 42 |
| 4 | 58 | 42 |
| 5 | 59 | 41 |
| 6 | 59 | 41 |
| 7 | 59 | 41 |
| 8 | 59 | 41 |
| 9 | 60 | 40 |
| 10 | 60 | 40 |
| 11 | 61 | 39 |
| 12 | 61 | 39 |
| 13 | 62 | 38 |
| 14 | 62 | 38 |
| 15 | 62 | 38 |
| 16 | 62 | 38 |
| 17 | 62 | 38 |
| 18 | 62 | 38 |
| 19 | 61 | 39 |
| 20 | 61 | 39 |
| 21 | 60 | 40 |
| 22 | 60 | 40 |
| 23 | 60 | 40 |
| 24 | 60 | 40 |
| 25 | 60 | 40 |
| 26 | 60 | 40 |
| 27 | 60 | 40 |
| 28 | 60 | 40 |
| 29 | 60 | 40 |
| 30 | 60 | 40 |
| 31 | 60 | 40 |
Chance of precipitation in October
Hainan gets around 37 mm of rain and snow over 6.9 wet days in October. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 21% and peaks near 28% on the wettest days, and about 1 day brings snow. The odds ease toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 24 | 23 | 23 | 22 | 22 | 22 | 21 | 21 | 20 | 20 | 19 | 19 | 18 | 18 | 17 | 17 | 16 | 15 | 15 | 14 | 14 |
| Snow chance (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 6 | 7 | 7 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 28 | 1 |
| 2 | 28 | 1 |
| 3 | 27 | 1 |
| 4 | 27 | 1 |
| 5 | 27 | 1 |
| 6 | 26 | 1 |
| 7 | 26 | 1 |
| 8 | 26 | 1 |
| 9 | 25 | 1 |
| 10 | 25 | 1 |
| 11 | 24 | 2 |
| 12 | 23 | 2 |
| 13 | 23 | 2 |
| 14 | 22 | 2 |
| 15 | 22 | 2 |
| 16 | 22 | 2 |
| 17 | 21 | 2 |
| 18 | 21 | 3 |
| 19 | 20 | 3 |
| 20 | 20 | 3 |
| 21 | 19 | 4 |
| 22 | 19 | 4 |
| 23 | 18 | 4 |
| 24 | 18 | 5 |
| 25 | 17 | 5 |
| 26 | 17 | 5 |
| 27 | 16 | 6 |
| 28 | 15 | 6 |
| 29 | 15 | 6 |
| 30 | 14 | 7 |
| 31 | 14 | 7 |
Humidity in October
Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, October lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 98 | 98 | 99 | 99 | 99 | 99 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Comfortable (%) | 2 | 2 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | |
|---|---|---|
| 1 | 98 | 2 |
| 2 | 98 | 2 |
| 3 | 99 | 1 |
| 4 | 99 | 1 |
| 5 | 99 | 1 |
| 6 | 99 | 1 |
| 7 | 100 | 0 |
| 8 | 100 | 0 |
| 9 | 100 | 0 |
| 10 | 100 | 0 |
| 11 | 100 | 0 |
| 12 | 100 | 0 |
| 13 | 100 | 0 |
| 14 | 100 | 0 |
| 15 | 100 | 0 |
| 16 | 100 | 0 |
| 17 | 100 | 0 |
| 18 | 100 | 0 |
| 19 | 100 | 0 |
| 20 | 100 | 0 |
| 21 | 100 | 0 |
| 22 | 100 | 0 |
| 23 | 100 | 0 |
| 24 | 100 | 0 |
| 25 | 100 | 0 |
| 26 | 100 | 0 |
| 27 | 100 | 0 |
| 28 | 100 | 0 |
| 29 | 100 | 0 |
| 30 | 100 | 0 |
| 31 | 100 | 0 |
Wind in October
Winds average 12 km/h in October.
Across October, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 12 | light breeze |
| 2 | 12 | light breeze |
| 3 | 12 | light breeze |
| 4 | 12 | light breeze |
| 5 | 12 | light breeze |
| 6 | 12 | light breeze |
| 7 | 12 | light breeze |
| 8 | 12 | light breeze |
| 9 | 12 | light breeze |
| 10 | 12 | light breeze |
| 11 | 12 | light breeze |
| 12 | 12 | light breeze |
| 13 | 12 | light breeze |
| 14 | 12 | light breeze |
| 15 | 12 | light breeze |
| 16 | 12 | light breeze |
| 17 | 12 | light breeze |
| 18 | 12 | light breeze |
| 19 | 12 | light breeze |
| 20 | 12 | light breeze |
| 21 | 12 | light breeze |
| 22 | 12 | light breeze |
| 23 | 12 | light breeze |
| 24 | 12 | light breeze |
| 25 | 12 | light breeze |
| 26 | 12 | light breeze |
| 27 | 12 | light breeze |
| 28 | 12 | light breeze |
| 29 | 12 | light breeze |
| 30 | 12 | light breeze |
| 31 | 12 | light breeze |
Sunrise & sunset in October
Daylight runs from about 11 h 30 min at the start of October to 9 h 48 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 102 minutes over October. Sunrise moves from 5:37 AM to 6:21 AM, and sunset from 5:05 PM to 4:10 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.5 | 11.4 | 11.3 | 11.3 | 11.2 | 11.2 | 11.1 | 11.1 | 11.0 | 10.9 | 10.9 | 10.8 | 10.8 | 10.7 | 10.7 | 10.6 | 10.6 | 10.5 | 10.4 | 10.4 | 10.3 | 10.3 | 10.2 | 10.2 | 10.1 | 10.1 | 10.0 | 10.0 | 9.9 | 9.9 | 9.8 |
| Sunrise (AM) | 5:37 | 5:39 | 5:40 | 5:41 | 5:43 | 5:44 | 5:46 | 5:47 | 5:49 | 5:50 | 5:51 | 5:53 | 5:54 | 5:56 | 5:57 | 5:59 | 6:00 | 6:02 | 6:03 | 6:05 | 6:06 | 6:08 | 6:09 | 6:11 | 6:12 | 6:14 | 6:15 | 6:17 | 6:18 | 6:20 | 6:21 |
| Sunset (PM) | 5:05 | 5:03 | 5:01 | 4:59 | 4:57 | 4:55 | 4:53 | 4:51 | 4:49 | 4:47 | 4:45 | 4:43 | 4:41 | 4:39 | 4:37 | 4:35 | 4:34 | 4:32 | 4:30 | 4:28 | 4:26 | 4:25 | 4:23 | 4:21 | 4:19 | 4:18 | 4:16 | 4:15 | 4:13 | 4:11 | 4:10 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.5 | 5:37 | 5:05 |
| 2 | 11.4 | 5:39 | 5:03 |
| 3 | 11.3 | 5:40 | 5:01 |
| 4 | 11.3 | 5:41 | 4:59 |
| 5 | 11.2 | 5:43 | 4:57 |
| 6 | 11.2 | 5:44 | 4:55 |
| 7 | 11.1 | 5:46 | 4:53 |
| 8 | 11.1 | 5:47 | 4:51 |
| 9 | 11.0 | 5:49 | 4:49 |
| 10 | 10.9 | 5:50 | 4:47 |
| 11 | 10.9 | 5:51 | 4:45 |
| 12 | 10.8 | 5:53 | 4:43 |
| 13 | 10.8 | 5:54 | 4:41 |
| 14 | 10.7 | 5:56 | 4:39 |
| 15 | 10.7 | 5:57 | 4:37 |
| 16 | 10.6 | 5:59 | 4:35 |
| 17 | 10.6 | 6:00 | 4:34 |
| 18 | 10.5 | 6:02 | 4:32 |
| 19 | 10.4 | 6:03 | 4:30 |
| 20 | 10.4 | 6:05 | 4:28 |
| 21 | 10.3 | 6:06 | 4:26 |
| 22 | 10.3 | 6:08 | 4:25 |
| 23 | 10.2 | 6:09 | 4:23 |
| 24 | 10.2 | 6:11 | 4:21 |
| 25 | 10.1 | 6:12 | 4:19 |
| 26 | 10.1 | 6:14 | 4:18 |
| 27 | 10.0 | 6:15 | 4:16 |
| 28 | 10.0 | 6:17 | 4:15 |
| 29 | 9.9 | 6:18 | 4:13 |
| 30 | 9.9 | 6:20 | 4:11 |
| 31 | 9.8 | 6:21 | 4:10 |
Solar energy in October
Average shortwave solar energy reaching the ground each day in October, about 2.86 kWh/m².
For context, solar energy here swings from a low near 1.53 kWh/m² to a high of 5.78 kWh/m² in May across the year — October's 2.86 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 3.4 | 3.4 | 3.4 | 3.3 | 3.3 | 3.3 | 3.2 | 3.2 | 3.1 | 3.1 | 3.1 | 3.0 | 3.0 | 3.0 | 2.9 | 2.9 | 2.9 | 2.8 | 2.8 | 2.7 | 2.7 | 2.7 | 2.6 | 2.6 | 2.5 | 2.5 | 2.5 | 2.5 | 2.4 | 2.4 | 2.4 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 3.4 | Moderate |
| 2 | 3.4 | Moderate |
| 3 | 3.4 | Moderate |
| 4 | 3.3 | Moderate |
| 5 | 3.3 | Moderate |
| 6 | 3.3 | Moderate |
| 7 | 3.2 | Moderate |
| 8 | 3.2 | Moderate |
| 9 | 3.1 | Moderate |
| 10 | 3.1 | Moderate |
| 11 | 3.1 | Moderate |
| 12 | 3.0 | Moderate |
| 13 | 3.0 | Moderate |
| 14 | 3.0 | Moderate |
| 15 | 2.9 | Moderate |
| 16 | 2.9 | Moderate |
| 17 | 2.9 | Moderate |
| 18 | 2.8 | Moderate |
| 19 | 2.8 | Moderate |
| 20 | 2.7 | Moderate |
| 21 | 2.7 | Moderate |
| 22 | 2.7 | Moderate |
| 23 | 2.6 | Moderate |
| 24 | 2.6 | Moderate |
| 25 | 2.5 | Moderate |
| 26 | 2.5 | Moderate |
| 27 | 2.5 | Moderate |
| 28 | 2.5 | Moderate |
| 29 | 2.4 | Moderate |
| 30 | 2.4 | Moderate |
| 31 | 2.4 | Moderate |
Hazard calendar for Hainan
None of Hainan's seasonal hazards are active in October. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Hainan's rainy season runs June–September, when most of the year's rain falls.
Is October a good time to visit Hainan?
Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
October is a weaker month for outdoor sightseeing in Hainan.
What to pack for Hainan in October
From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In October, Hainan sees daytime highs around 10°C and nights near -0°C. Pack a warm layer. About 7 days see rain.
UV index in Hainan in October
Clear-sky midday UV in October peaks around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Hainan peaks around August 17 at about 7 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 19 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 1 | 3 | 4 | 5 | 6 | 5 | 7 | 5 | 2 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | Moderate | Very high | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 1 | Low |
| Mar | 3 | Moderate |
| Apr | 4 | Moderate |
| May | 5 | High |
| Jun | 6 | High |
| Jul | 5 | Moderate |
| Aug | 7 | Very high |
| Sep | 5 | Moderate |
| Oct | 2 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Air quality in Hainan in October
Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.
Air quality in Hainan is worst in March — around 37 µg/m³ PM2.5 (poor), about 2.3× the cleanest month (August, 16 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Hainan's WHO annual average of 25 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 31 | 31 | 37 | 30 | 21 | 19 | 20 | 16 | 17 | 22 | 28 | 27 |
| Level | Moderate | Moderate | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 31 | Moderate |
| Feb | 31 | Moderate |
| Mar | 37 | Poor |
| Apr | 30 | Moderate |
| May | 21 | Moderate |
| Jun | 19 | Moderate |
| Jul | 20 | Moderate |
| Aug | 16 | Moderate |
| Sep | 17 | Moderate |
| Oct | 22 | Moderate |
| Nov | 28 | Moderate |
| Dec | 27 | Moderate |
Where is Hainan?
Hainan sits at 47.2°N, 127.0°E, 0 m above sea level, in China. The nearest listed city is Harbin, 167 km away.
Topography around Hainan
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Hainan.
Within 3 km, the terrain around Hainan has only modest variations in elevation — a maximum elevation change of 73 m around an average of 214 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 91 m; within 80 km, significant variations in elevation — a maximum elevation change of 538 m.
The land around Hainan is covered by cropland (87%) within 3 km, cropland (89%) within 16 km, and cropland (82%) within 80 km.
China travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / I
- 220 V · 50 Hz
- Prices
- ≈ 47% of US
- price level, 2025
- GDP per capita
- $13,862
- 2025
- Happiness
- 6.1 / 10
- World Happiness, 2025
- Homicide rate
- 0.5
- per 100k, 2020
- Road deaths
- 17.4
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 464
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Hainan (47.2322°, 126.9809°, elevation 0 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).