Belawan weather in May

In May, Belawan sees average daytime highs of 32°C and overnight lows near 25°C, with 250 mm of rain across 26.8 wet days and about 12.2 hours of daylight. It is the 1st-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 2% of the time in May, and the air most often feels miserable.

Daylight stretches from about 12 h 06 min at the start of May to 12 h 12 min by month's end. Set against the rest of the year, May is Belawan's 8th-clearest and 11th-windiest month. For the whole year in context, see Belawan's year-round climate.

Daytime high
32°
1st warmest
Overnight low
25°
12th coldest
Rainfall
250 mm
26.8 wet days
Daylight
12 h 12 min
6:16 AM – 6:27 PM
Cloud cover
87%
8th clearest
Wind
5 km/h
11th windiest
Solar energy
5.3 kWh/m²
Travel score
2.3
out of 10

Belawan is administrative village of Indonesia.

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical May day in Belawan reaches about 32°C in the afternoon and slips back to 25°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 34°C. Set against its neighbours, May runs on par with April and on par with June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13225
23225
33225
43225
53225
63225
73225
83225
93225
103225
113225
123225
133225
143225
153225
163225
173225
183225
193225
203225
213225
223225
233225
243225
253225
263225
273225
283225
293225
303225
313225

How May really feels in Belawan

Once humidity and wind are folded in, May averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
31 feel dangerously hot (≥ 39°C)
Days feeling ≤ C
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Belawan weather by month

How May compares with the rest of the year at a glance. May is the 1st-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°21425.411.82.9
Feb31° / 24°14420.611.93.0
Mar32° / 24°18223.6122.7
Apr32° / 25°22926.812.12.2
May32° / 25°25026.812.22.3
Jun32° / 25°20123.512.22.5
Jul32° / 24°21323.912.22.7
Aug32° / 24°25226.712.12.4
Sep31° / 24°32428.3122.3
Oct31° / 24°36229.911.92.3
Nov30° / 24°39229.511.82.4
Dec30° / 24°34728.611.82.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 6% of May, with mostly cloudy or overcast conditions the remaining 92%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1694
2694
3595
4595
5595
6595
7694
8694
9793
10892
11892
12892
13991
14991
15991
16991
17991
181090
191090
201090
211090
221090
231090
24991
25991
26892
27892
28892
29991
30991
311090

Chance of precipitation in May

Any precipitation

Belawan gets around 250 mm of rain over 26.8 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 87% and peaks near 91% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
191
290
390
489
589
688
788
888
987
1087
1187
1286
1386
1486
1586
1686
1786
1886
1986
2086
2186
2286
2386
2486
2586
2686
2786
2885
2985
3085
3185

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the miserable band about 99% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
10100
20100
30100
40100
50100
6199
7199
8199
9199
10199
11199
12199
13199
14199
15199
16199
17199
18199
19199
20199
21199
22199
23199
24199
25199
26199
27199
28199
29199
30199
31199

Wind in May

Winds average 5 km/h in May.

Across May, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in May

DaylightNight

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

Days grow by about 6 minutes over May. Sunrise moves from 6:19 AM to 6:17 AM, and sunset from 6:26 PM to 6:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:196:26
212.16:186:26
312.16:186:26
412.16:186:26
512.16:186:26
612.16:186:26
712.16:176:26
812.26:176:26
912.26:176:26
1012.26:176:26
1112.26:176:26
1212.26:176:26
1312.26:176:26
1412.26:176:26
1512.26:166:27
1612.26:166:27
1712.26:166:27
1812.26:166:27
1912.26:166:27
2012.26:166:27
2112.26:166:27
2212.26:166:27
2312.26:166:27
2412.26:166:28
2512.26:166:28
2612.26:166:28
2712.26:166:28
2812.26:166:28
2912.26:166:28
3012.26:176:28
3112.26:176:29

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.3 kWh/m².

For context, solar energy here swings from a low near 4.19 kWh/m² to a high of 5.69 kWh/m² in March across the year — May's 5.3 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in May

Hazard calendar for Belawan

In seasonPeak

In May, Belawan sits inside its cyclone season. The full year is below, with each hazard's peak months called out.

Belawan sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.

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

Is May a good time to visit Belawan?

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

2.3
Sightseeing
9th-best month of the year
3.7
Beach & pool
7th-best month of the year

May is a weaker month for outdoor sightseeing in Belawan.

What to pack for Belawan in May

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

In May, Belawan sees daytime highs around 32°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

Sea temperature near Belawan in May

The nearest coast averages about 30°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 24 km away) is warmest in June at about 30°C and coldest in January near 29°C.

The water stays above 20°C all year — warm enough for a swim any month.

28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar30Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Belawan in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Belawan peaks around February 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 10 (extreme).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 19UV 14Jun 23UV 10
UV index (midday)Level
Jan12Extreme
Feb14Extreme
Mar13Extreme
Apr12Extreme
May11Extreme
Jun10Extreme
Jul10Extreme
Aug11Extreme
Sep13Extreme
Oct12Extreme
Nov11Extreme
Dec10Extreme

Air quality in Belawan in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Belawan is worst in September — around 33 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 1632 µg/m³Dec 1123 µg/m³
PM2.5 (µg/m³)Level
Jan26Moderate
Feb28Moderate
Mar32Moderate
Apr31Moderate
May30Moderate
Jun29Moderate
Jul30Moderate
Aug30Moderate
Sep33Moderate
Oct30Moderate
Nov23Moderate
Dec23Moderate
Location & terrain

Where is Belawan?

Belawan sits at 3.8°N, 98.7°E, 5 m above sea level, in Indonesia. The nearest listed city is Labuhan Deli, 13 km away.

Topography around Belawan

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Belawan.

Within 3 km, the terrain around Belawan has only modest variations in elevation — a maximum elevation change of 14 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 26 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,415 m.

The land around Belawan is covered by mangroves (44%), artificial surfaces (24%) and water (24%) within 3 km, water (32%) and trees (22%) within 16 km, and trees (54%) and water (34%) within 80 km.

3 km
14 m
16 km
26 m
80 km
2,415 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
May weather nearby: Labuhan Deli 13 km · Medan 21 km · Sunggal 23 km · Percut 26 km · Stabat 26 km · Binjai 29 km · Deli Tua 30 km · Perbaungan 38 km

Indonesia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$5,060
2025
Happiness
5.6 / 10
World Happiness, 2025
Safe drinking water
30%
of population, 2024
Homicide rate
0.3
per 100k, 2022
Road deaths
11.3
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 471
Religion
Muslim 87%Protestant 8%Roman Catholic 3%Hindu 2%

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 Belawan (3.7755°, 98.6832°, elevation 5 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).