Rangkasbitung weather in May

In May, Rangkasbitung sees average daytime highs of 31°C and overnight lows near 24°C, with 152 mm of rain across 23.1 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 14% of the time in May, and the air most often feels oppressive.

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 Rangkasbitung's 5th-clearest and 8th-windiest month. For the whole year in context, see Rangkasbitung's year-round climate.

Daytime high
31°
3rd warmest
Overnight low
24°
11th coldest
Rainfall
152 mm
23.1 wet days
Daylight
11 h 42 min
6:00 AM – 5:43 PM
Cloud cover
70%
5th clearest
Wind
4 km/h
8th windiest
Solar energy
4.82 kWh/m²
Travel score
3.2
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 Rangkasbitung reaches about 31°C in the afternoon and slips back to 24°C overnight — a 7°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)
13124
23124
33124
43124
53124
63124
73124
83124
93124
103124
113124
123124
133124
143124
153124
163124
173124
183124
193124
203124
213124
223124
233124
243124
253124
263124
273124
283124
293124
303124
313124

How May really feels in Rangkasbitung

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
heat index over the day's high
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.

Rangkasbitung 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
Jan29° / 24°3082912.32.9
Feb30° / 24°2852712.22.7
Mar30° / 24°27228.8122.7
Apr31° / 24°22626.811.92.7
May31° / 24°15223.111.73.2
Jun31° / 23°10317.611.63.8
Jul30° / 23°7414.111.74.3
Aug31° / 23°6013.111.84.3
Sep31° / 23°7413.9123.8
Oct31° / 24°14421.412.13.1
Nov31° / 24°24126.312.32.7
Dec30° / 24°30027.512.42.9

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 22% of May, with mostly cloudy or overcast conditions the remaining 64%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12476
22575
32575
42575
52773
62773
72773
82872
92971
103070
113268
123367
133466
143565
153763
163961
174060
184159
194159
204357
214357
224357
234555
244555
254456
264555
274555
284555
294456
304456
314357

Chance of precipitation in May

Any precipitation

Rangkasbitung gets around 152 mm of rain over 23.1 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 75% and peaks near 85% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
185
285
385
484
584
683
783
882
981
1080
1179
1278
1377
1475
1574
1673
1772
1871
1970
2069
2169
2268
2368
2467
2567
2667
2767
2867
2967
3067
3168

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 51% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
104159
204159
304159
404159
504258
604258
704258
804357
904357
1004456
1104555
1204654
1304654
1404753
1504951
1605050
1705149
1805248
1905347
2005545
2105644
2205743
2305842
2405941
2506139
2616138
2716237
2816237
2916336
3016435
3116435

Wind in May

Winds average 4 km/h in May.

Across May, daily wind ranges from about 4 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
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

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 5:59 AM to 6:03 AM, and sunset from 5:46 PM to 5:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:595:46
211.85:595:45
311.85:595:45
411.85:595:45
511.85:595:45
611.85:595:44
711.85:595:44
811.75:595:44
911.75:595:44
1011.75:595:43
1111.75:595:43
1211.75:595:43
1311.76:005:43
1411.76:005:43
1511.76:005:43
1611.76:005:43
1711.76:005:42
1811.76:005:42
1911.76:005:42
2011.76:005:42
2111.76:015:42
2211.76:015:42
2311.76:015:42
2411.76:015:42
2511.76:015:42
2611.76:025:42
2711.76:025:42
2811.76:025:42
2911.76:025:42
3011.76:025:42
3111.76:035:42

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.82 kWh/m².

For context, solar energy here swings from a low near 4.41 kWh/m² to a high of 5.81 kWh/m² in September across the year — May's 4.82 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.9Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in May

Hazard calendar for Rangkasbitung

In seasonPeak

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

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

Rangkasbitung's rainy season runs October–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 Rangkasbitung?

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

3.2
Sightseeing
5th-best month of the year
4.6
Beach & pool
6th-best month of the year

May is a weaker month for outdoor sightseeing in Rangkasbitung.

What to pack for Rangkasbitung in May

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

In May, Rangkasbitung sees daytime highs around 31°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.

light clothesrain gearsun protection

Sea temperature near Rangkasbitung 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 41 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
Apr29Tropical
May30Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Rangkasbitung 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 Rangkasbitung peaks around March 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 15 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highVery highMar 13UV 15Nov 15UV 7
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar16Extreme
Apr11Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug10Very high
Sep10Very high
Oct10Extreme
Nov6High
Dec11Extreme

Air quality in Rangkasbitung 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 Rangkasbitung 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 Rangkasbitung?

Rangkasbitung sits at 6.4°S, 106.2°E, 27 m above sea level, in Indonesia. The nearest listed city is Pandeglang, 17 km away.

Topography around Rangkasbitung

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

Within 3 km, the terrain around Rangkasbitung has only modest variations in elevation — a maximum elevation change of 55 m around an average of 31 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 248 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,145 m.

The land around Rangkasbitung is covered by trees (54%) and artificial surfaces (26%) within 3 km, trees (75%) within 16 km, and trees (44%) and water (38%) within 80 km.

3 km
55 m
16 km
248 m
80 km
2,145 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Pandeglang 17 km · Serang 29 km · Kresek 29 km · Cikupa 32 km · Curug 35 km · Pasarkemis 37 km · Cilegon 44 km · Sepatan 45 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 Rangkasbitung (-6.3591°, 106.2494°, elevation 27 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).