Sepatan weather in May

In May, Sepatan sees average daytime highs of 31°C and overnight lows near 26°C, with 129 mm of rain across 20.6 wet days and about 11.7 hours of daylight. It is the 3rd-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 23% of the time in May, and the air most often feels miserable.

Daylight stretches from about 11 h 48 min at the start of May to 11 h 42 min by month's end. Set against the rest of the year, May is Sepatan's 5th-clearest and 11th-windiest month. For the whole year in context, see Sepatan's year-round climate.

Daytime high
31°
3rd warmest
Overnight low
26°
12th coldest
Rainfall
129 mm
20.6 wet days
Daylight
11 h 42 min
5:58 AM – 5:42 PM
Cloud cover
65%
5th clearest
Wind
7 km/h
11th windiest
Solar energy
5.09 kWh/m²
Travel score
3.3
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical May day in Sepatan reaches about 31°C in the afternoon and slips back to 26°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 32°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)
13126
23126
33126
43126
53126
63126
73126
83126
93126
103126
113126
123126
133126
143126
153126
163126
173126
183126
193126
203126
213126
223126
233126
243126
253126
263126
273126
283126
293126
303126
313126

How May really feels in Sepatan

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
12 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.

Sepatan weather by month

How May compares with the rest of the year at a glance. May is the 3rd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 25°27928.512.32.8
Feb30° / 25°25026.412.22.7
Mar31° / 25°23228122.7
Apr31° / 26°19125.711.92.8
May31° / 26°12920.611.73.3
Jun31° / 25°9715.911.73.9
Jul31° / 25°681311.74.3
Aug31° / 25°389.811.84.5
Sep32° / 25°4911.2124.0
Oct32° / 26°10718.412.13.3
Nov31° / 26°18224.612.32.8
Dec30° / 25°24526.112.32.9

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 19% of May, with mostly cloudy or overcast conditions the remaining 58%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13169
23169
33268
43268
53268
63268
73268
83367
93466
103664
113763
123862
134060
144258
154258
164456
174654
184654
194753
204852
214951
225050
235050
244951
255050
265050
275050
284951
294753
304753
314753

Chance of precipitation in May

Any precipitation

Sepatan gets around 129 mm of rain over 20.6 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 67% and peaks near 80% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
180
280
379
479
578
677
777
876
975
1073
1172
1271
1370
1468
1567
1665
1764
1862
1961
2060
2159
2258
2358
2458
2557
2657
2758
2858
2958
3058
3159

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 90% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
1298
2298
3397
4397
5397
6397
7496
8496
9595
10595
11694
12793
13892
14892
15991
161090
171189
181288
191288
201387
211486
221486
231585
241585
251684
261684
271783
281783
291783
301882
311882

Wind in May

Winds average 7 km/h in May.

Across May, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 48 min at the start of May to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over May. Sunrise moves from 5:57 AM to 6:01 AM, and sunset from 5:45 PM to 5:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:575:45
211.85:575:44
311.85:575:44
411.85:575:44
511.85:575:44
611.85:575:43
711.85:575:43
811.85:585:43
911.85:585:43
1011.75:585:42
1111.75:585:42
1211.75:585:42
1311.75:585:42
1411.75:585:42
1511.75:585:42
1611.75:585:42
1711.75:585:42
1811.75:595:41
1911.75:595:41
2011.75:595:41
2111.75:595:41
2211.75:595:41
2311.75:595:41
2411.75:595:41
2511.76:005:41
2611.76:005:41
2711.76:005:41
2811.76:005:41
2911.76:005:41
3011.76:015:41
3111.76:015:41

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.09 kWh/m².

For context, solar energy here swings from a low near 4.8 kWh/m² to a high of 6.18 kWh/m² in September across the year — May's 5.09 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in May

Hazard calendar for Sepatan

In seasonPeak

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

Sepatan sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Sepatan's rainy season runs November–May, when most of the year's rain falls.

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

Is May a good time to visit Sepatan?

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

3.3
Sightseeing
5th-best month of the year
5.0
Beach & pool
6th-best month of the year

May is a weaker month for outdoor sightseeing in Sepatan.

What to pack for Sepatan in May

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

In May, Sepatan sees daytime highs around 31°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

Sea temperature near Sepatan 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 28 km away) is warmest in May 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
Mar29Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov30Tropical
Dec29Tropical

UV index in Sepatan in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sepatan peaks around March 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 16 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeVery highMar 15UV 15Nov 16UV 7
UV index (midday)Level
Jan13Extreme
Feb13Extreme
Mar15Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul9Very high
Aug9Very high
Sep10Very high
Oct11Extreme
Nov7High
Dec11Extreme

Air quality in Sepatan 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 Sepatan is worst in May — around 74 µg/m³ PM2.5 (unhealthy), about 1.9× the cleanest month (December, 38 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorMay 2073 µg/m³Dec 2438 µg/m³
PM2.5 (µg/m³)Level
Jan39Poor
Feb41Poor
Mar51Poor
Apr62Unhealthy
May74Unhealthy
Jun69Unhealthy
Jul67Unhealthy
Aug67Unhealthy
Sep70Unhealthy
Oct69Unhealthy
Nov61Unhealthy
Dec38Poor
Location & terrain

Where is Sepatan?

Sepatan sits at 6.1°S, 106.6°E, 11 m above sea level, in Indonesia. The nearest listed city is Teluknaga, 7.0 km away.

Topography around Sepatan

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

Within 3 km, the terrain around Sepatan has only modest variations in elevation — a maximum elevation change of 15 m around an average of 9 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 46 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,184 m.

The land around Sepatan is covered by artificial surfaces (42%) and cropland (40%) within 3 km, artificial surfaces (39%) and cropland (21%) within 16 km, and water (42%) and trees (34%) within 80 km.

3 km
15 m
16 km
46 m
80 km
2,184 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
May weather nearby: Teluknaga 7.0 km · Pasarkemis 8.0 km · Tangerang 9.0 km · Cikupa 15 km · Curug 16 km · Ciputat 19 km · Kresek 22 km · Serpong 24 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 Sepatan (-6.1189°, 106.575°, elevation 11 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).