Hainan weather in April

In April, Hainan sees average daytime highs of 12°C and overnight lows near 0°C, with 33 mm of precipitation across 5.6 wet days and about 13.3 hours of daylight. It is the 6th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 8°C in the first days to 16°C by the end. The sky is clear or mostly clear about 25% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 30 min at the start of April to 14 h 06 min by month's end. Set against the rest of the year, April is Hainan's 8th-clearest and 1st-windiest month. For the whole year in context, see Hainan's year-round climate.

Daytime high: 12°; 6th warmest
Overnight low: 0°; 7th coldest
Precipitation: 33 mm; 5.6 wet days
Daylight: 13 h 24 min; 4:51 AM – 6:13 PM
Cloud cover: 61%; 8th clearest
Wind: 14 km/h; 1st windiest
Solar energy: 5.19 kWh/m²
Travel score: 3.2; out of 10

Air quality: Elevated; PM2.5 25 µg/m³ · 2018

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← March Hainan year-round climate May →Best places to visit in April

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 8°C in the first days to 16°C by the end.

A typical April day in Hainan reaches about 12°C in the afternoon and slips back to 0°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 5°C and 19°C. Set against its neighbours, April runs about 11°C warmer than March and about 8°C cooler than May.

	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
Avg high (°C)	7	7	8	8	8	9	9	9	10	10	10	10	11	11	11	12	12	12	13	13	14	14	14	15	15	15	15	16	16	16
Avg low (°C)	-4	-4	-4	-3	-3	-3	-2	-2	-2	-2	-1	-1	-1	0	0	0	0	1	1	1	2	2	2	2	3	3	3	3	4	4

	Avg high (°C)	Avg low (°C)
1	7	-4
2	7	-4
3	8	-4
4	8	-3
5	8	-3
6	9	-3
7	9	-2
8	9	-2
9	10	-2
10	10	-2
11	10	-1
12	10	-1
13	11	-1
14	11	0
15	11	0
16	12	0
17	12	0
18	12	1
19	13	1
20	13	1
21	14	2
22	14	2
23	14	2
24	15	2
25	15	3
26	15	3
27	15	3
28	16	3
29	16	4
30	16	4

How April really feels in Hainan

Once humidity and wind are folded in, April averages 0 days that feel above 32°C and 28 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

The story in April is cold — wind chill drags the overnight "feels like" below the raw low.

Hainan weather by month

How April compares with the rest of the year at a glance. April is the 6th-warmest and 7th-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 April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 19% of April, with mostly cloudy or overcast conditions the remaining 57%.

	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
Clearer (%)	48	47	47	48	48	47	48	47	47	46	45	44	43	42	41	41	40	41	41	40	40	40	40	41	41	42	42	42	42	43
Cloudier (%)	52	53	53	52	52	53	52	53	53	54	55	56	57	58	59	59	60	59	59	60	60	60	60	59	59	58	58	58	58	57

	Clearer (%)	Cloudier (%)
1	48	52
2	47	53
3	47	53
4	48	52
5	48	52
6	47	53
7	48	52
8	47	53
9	47	53
10	46	54
11	45	55
12	44	56
13	43	57
14	42	58
15	41	59
16	41	59
17	40	60
18	41	59
19	41	59
20	40	60
21	40	60
22	40	60
23	40	60
24	41	59
25	41	59
26	42	58
27	42	58
28	42	58
29	42	58
30	43	57

Chance of precipitation in April

Any precipitationSnow

Hainan gets around 33 mm of rain and snow over 5.6 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 20% and peaks near 24% on the wettest days, and about 1 day brings snow. The odds climb 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
Rain chance (%)	13	14	14	15	15	16	16	17	17	18	18	19	20	20	21	21	22	22	22	22	22	22	22	22	23	23	23	24	24	24
Snow chance (%)	8	7	7	7	7	7	6	6	6	6	6	5	5	5	5	4	4	4	3	3	3	3	2	2	2	2	2	1	1	1

	Rain chance (%)	Snow chance (%)
1	13	8
2	14	7
3	14	7
4	15	7
5	15	7
6	16	7
7	16	6
8	17	6
9	17	6
10	18	6
11	18	6
12	19	5
13	20	5
14	20	5
15	21	5
16	21	4
17	22	4
18	22	4
19	22	3
20	22	3
21	22	3
22	22	3
23	22	2
24	22	2
25	23	2
26	23	2
27	23	2
28	24	1
29	24	1
30	24	1

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

Most of April feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, April 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
Dry (%)	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	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

Wind in April

Winds average 14 km/h in April, the windiest month of the year.

Across April, daily wind ranges from about 13 km/h on the calmest days to 14 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
Wind speed (km/h)	13	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14
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

	Wind speed (km/h)	Feels
1	13	light breeze
2	14	light breeze
3	14	light breeze
4	14	light breeze
5	14	light breeze
6	14	light breeze
7	14	light breeze
8	14	light breeze
9	14	light breeze
10	14	light breeze
11	14	light breeze
12	14	light breeze
13	14	light breeze
14	14	light breeze
15	14	light breeze
16	14	light breeze
17	14	light breeze
18	14	light breeze
19	14	light breeze
20	14	light breeze
21	14	light breeze
22	14	light breeze
23	14	light breeze
24	14	light breeze
25	14	light breeze
26	14	light breeze
27	14	light breeze
28	14	light breeze
29	14	light breeze
30	14	light breeze

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 30 min at the start of April to 14 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 96 minutes over April. Sunrise moves from 5:21 AM to 4:26 AM, and sunset from 5:52 PM to 6:33 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
Daylight (h)	12.5	12.6	12.6	12.7	12.7	12.8	12.9	12.9	13.0	13.0	13.1	13.1	13.2	13.3	13.3	13.4	13.4	13.5	13.5	13.6	13.6	13.7	13.7	13.8	13.9	13.9	14.0	14.0	14.1	14.1
Sunrise (AM)	5:21	5:19	5:17	5:15	5:13	5:11	5:09	5:07	5:05	5:03	5:01	4:59	4:57	4:55	4:53	4:51	4:50	4:48	4:46	4:44	4:42	4:40	4:38	4:36	4:35	4:33	4:31	4:29	4:28	4:26
Sunset (PM)	5:52	5:53	5:55	5:56	5:58	5:59	6:00	6:02	6:03	6:05	6:06	6:08	6:09	6:10	6:12	6:13	6:15	6:16	6:17	6:19	6:20	6:22	6:23	6:24	6:26	6:27	6:29	6:30	6:31	6:33

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.5	5:21	5:52
2	12.6	5:19	5:53
3	12.6	5:17	5:55
4	12.7	5:15	5:56
5	12.7	5:13	5:58
6	12.8	5:11	5:59
7	12.9	5:09	6:00
8	12.9	5:07	6:02
9	13.0	5:05	6:03
10	13.0	5:03	6:05
11	13.1	5:01	6:06
12	13.1	4:59	6:08
13	13.2	4:57	6:09
14	13.3	4:55	6:10
15	13.3	4:53	6:12
16	13.4	4:51	6:13
17	13.4	4:50	6:15
18	13.5	4:48	6:16
19	13.5	4:46	6:17
20	13.6	4:44	6:19
21	13.6	4:42	6:20
22	13.7	4:40	6:22
23	13.7	4:38	6:23
24	13.8	4:36	6:24
25	13.9	4:35	6:26
26	13.9	4:33	6:27
27	14.0	4:31	6:29
28	14.0	4:29	6:30
29	14.1	4:28	6:31
30	14.1	4:26	6:33

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.19 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 — April's 5.19 kWh/m² sits near the top of that range.

	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
Solar energy (kWh/m²)	4.9	4.9	4.9	5.0	5.0	5.0	5.0	5.0	5.0	5.1	5.1	5.1	5.1	5.1	5.1	5.1	5.1	5.2	5.2	5.2	5.2	5.3	5.3	5.3	5.3	5.4	5.4	5.4	5.5	5.5
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	4.9	Bright
2	4.9	Bright
3	4.9	Bright
4	5.0	Bright
5	5.0	Bright
6	5.0	Bright
7	5.0	Bright
8	5.0	Bright
9	5.0	Bright
10	5.1	Bright
11	5.1	Bright
12	5.1	Bright
13	5.1	Bright
14	5.1	Bright
15	5.1	Bright
16	5.1	Bright
17	5.1	Bright
18	5.2	Bright
19	5.2	Bright
20	5.2	Bright
21	5.2	Bright
22	5.3	Bright
23	5.3	Bright
24	5.3	Bright
25	5.3	Bright
26	5.4	Bright
27	5.4	Bright
28	5.4	Bright
29	5.5	Bright
30	5.5	Bright

Planning a trip in April

Hazard calendar for Hainan

In seasonPeak

None of Hainan's seasonal hazards are active in April. 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.

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is April a good time to visit Hainan?

Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

3.2

Sightseeing

6th-best month of the year

0.1

Beach & pool

6th-best month of the year

April is a weaker month for outdoor sightseeing in Hainan.

What to pack for Hainan in April

From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In April, Hainan sees daytime highs around 12°C and nights near 0°C. Pack a warm layer. Worth having: sun protection. About 6 days see rain.

a warm layersun protection

UV index in Hainan in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 4 — enough to warrant sun protection. 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 April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April 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

Location & terrain

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.

3 km

73 m

cropland 87%

16 km

91 m

cropland 89%

80 km

538 m

cropland 82%

treesgrasslandcroplandartificial surfaceswater

← March Hainan year-round climate May →Best places to visit in April

April weather nearby: Harbin 167 km · Raychikhinsk 336 km · Blagoveshchensk 341 km · Chigiri 347 km · Belogorsk 424 km · Svobodnyy 468 km · Birobidzhan 475 km · Namyang-nodongjagu 526 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).

	Avg high (°C)	Avg low (°C)
1	7	-4
2	7	-4
3	8	-4
4	8	-3
5	8	-3
6	9	-3
7	9	-2
8	9	-2
9	10	-2
10	10	-2
11	10	-1
12	10	-1
13	11	-1
14	11	0
15	11	0
16	12	0
17	12	0
18	12	1
19	13	1
20	13	1
21	14	2
22	14	2
23	14	2
24	15	2
25	15	3
26	15	3
27	15	3
28	16	3
29	16	4
30	16	4

	Clearer (%)	Cloudier (%)
1	48	52
2	47	53
3	47	53
4	48	52
5	48	52
6	47	53
7	48	52
8	47	53
9	47	53
10	46	54
11	45	55
12	44	56
13	43	57
14	42	58
15	41	59
16	41	59
17	40	60
18	41	59
19	41	59
20	40	60
21	40	60
22	40	60
23	40	60
24	41	59
25	41	59
26	42	58
27	42	58
28	42	58
29	42	58
30	43	57

	Rain chance (%)	Snow chance (%)
1	13	8
2	14	7
3	14	7
4	15	7
5	15	7
6	16	7
7	16	6
8	17	6
9	17	6
10	18	6
11	18	6
12	19	5
13	20	5
14	20	5
15	21	5
16	21	4
17	22	4
18	22	4
19	22	3
20	22	3
21	22	3
22	22	3
23	22	2
24	22	2
25	23	2
26	23	2
27	23	2
28	24	1
29	24	1
30	24	1

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

	Avg high (°C)	Avg low (°C)
1	7	-4
2	7	-4
3	8	-4
4	8	-3
5	8	-3
6	9	-3
7	9	-2
8	9	-2
9	10	-2
10	10	-2
11	10	-1
12	10	-1
13	11	-1
14	11	0
15	11	0
16	12	0
17	12	0
18	12	1
19	13	1
20	13	1
21	14	2
22	14	2
23	14	2
24	15	2
25	15	3
26	15	3
27	15	3
28	16	3
29	16	4
30	16	4

	Clearer (%)	Cloudier (%)
1	48	52
2	47	53
3	47	53
4	48	52
5	48	52
6	47	53
7	48	52
8	47	53
9	47	53
10	46	54
11	45	55
12	44	56
13	43	57
14	42	58
15	41	59
16	41	59
17	40	60
18	41	59
19	41	59
20	40	60
21	40	60
22	40	60
23	40	60
24	41	59
25	41	59
26	42	58
27	42	58
28	42	58
29	42	58
30	43	57

	Rain chance (%)	Snow chance (%)
1	13	8
2	14	7
3	14	7
4	15	7
5	15	7
6	16	7
7	16	6
8	17	6
9	17	6
10	18	6
11	18	6
12	19	5
13	20	5
14	20	5
15	21	5
16	21	4
17	22	4
18	22	4
19	22	3
20	22	3
21	22	3
22	22	3
23	22	2
24	22	2
25	23	2
26	23	2
27	23	2
28	24	1
29	24	1
30	24	1

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

	Avg high (°C)	Avg low (°C)
1	7	-4
2	7	-4
3	8	-4
4	8	-3
5	8	-3
6	9	-3
7	9	-2
8	9	-2
9	10	-2
10	10	-2
11	10	-1
12	10	-1
13	11	-1
14	11	0
15	11	0
16	12	0
17	12	0
18	12	1
19	13	1
20	13	1
21	14	2
22	14	2
23	14	2
24	15	2
25	15	3
26	15	3
27	15	3
28	16	3
29	16	4
30	16	4

	Clearer (%)	Cloudier (%)
1	48	52
2	47	53
3	47	53
4	48	52
5	48	52
6	47	53
7	48	52
8	47	53
9	47	53
10	46	54
11	45	55
12	44	56
13	43	57
14	42	58
15	41	59
16	41	59
17	40	60
18	41	59
19	41	59
20	40	60
21	40	60
22	40	60
23	40	60
24	41	59
25	41	59
26	42	58
27	42	58
28	42	58
29	42	58
30	43	57

	Rain chance (%)	Snow chance (%)
1	13	8
2	14	7
3	14	7
4	15	7
5	15	7
6	16	7
7	16	6
8	17	6
9	17	6
10	18	6
11	18	6
12	19	5
13	20	5
14	20	5
15	21	5
16	21	4
17	22	4
18	22	4
19	22	3
20	22	3
21	22	3
22	22	3
23	22	2
24	22	2
25	23	2
26	23	2
27	23	2
28	24	1
29	24	1
30	24	1

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100