Jombang weather in May

In May, Jombang sees average daytime highs of 31°C and overnight lows near 23°C, with 89 mm of rain across 15.2 wet days and about 11.7 hours of daylight. It is the 6th-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 25% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 11 h 42 min at the start of May to 11 h 36 min by month's end. Set against the rest of the year, May is Jombang's 5th-clearest and 11th-windiest month. For the whole year in context, see Jombang's year-round climate.

Daytime high
31°
6th warmest
Overnight low
23°
6th coldest
Rainfall
89 mm
15.2 wet days
Daylight
11 h 42 min
5:38 AM – 5:17 PM
Cloud cover
62%
5th clearest
Wind
4 km/h
11th windiest
Solar energy
5.04 kWh/m²
Travel score
3.9
out of 10

Jombang is district in Jombang Regency, East Java Province, 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 31°C through the month.

A typical May day in Jombang reaches about 31°C in the afternoon and slips back to 23°C overnight — a 8°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)
13123
23123
33123
43123
53123
63123
73123
83123
93123
103123
113123
123123
133123
143123
153123
163123
173123
183123
193123
203123
213123
223123
233123
243123
253123
263123
273123
283123
293123
303123
313123

How May really feels in Jombang

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.

Jombang weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°28628.312.42.6
Feb31° / 23°27826.712.22.5
Mar31° / 23°2762812.12.6
Apr31° / 23°20224.511.82.9
May31° / 23°8915.211.73.9
Jun31° / 22°538.811.64.6
Jul31° / 21°285.611.64.9
Aug32° / 21°133.311.84.9
Sep32° / 22°235124.2
Oct33° / 23°861212.23.4
Nov32° / 24°18321.412.32.7
Dec31° / 24°26626.512.42.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% 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 53%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
23961
33961
44060
54060
64060
73961
83961
93961
104159
114159
124258
134258
144555
154654
164753
174951
185050
195149
205248
215347
225347
235446
245545
255545
265446
275446
285446
295347
305347
315347

Chance of precipitation in May

Any precipitation

Jombang gets around 89 mm of rain over 15.2 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 48% and peaks near 62% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
162
261
360
459
558
657
756
855
954
1053
1152
1251
1350
1449
1548
1647
1746
1845
1945
2044
2144
2243
2343
2442
2541
2640
2740
2839
2938
3038
3137

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 70% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1016831
2016930
3016930
4016930
5026929
6026929
7036928
8036928
9037027
10046927
11046927
12056926
13057025
14066925
15067024
16077023
17077023
18077122
19087022
20087121
21087121
22087220
23097120
24097120
25097219
26097219
271107118
281107118
291107217
301107217
311107316

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 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
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 42 min at the start of May to 11 h 36 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 5:36 AM to 5:41 AM, and sunset from 5:20 PM to 5:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.75:365:20
211.75:365:20
311.75:365:20
411.75:365:20
511.75:365:19
611.75:365:19
711.75:375:19
811.75:375:18
911.75:375:18
1011.75:375:18
1111.75:375:18
1211.75:375:18
1311.75:375:17
1411.75:375:17
1511.75:375:17
1611.75:385:17
1711.75:385:17
1811.65:385:17
1911.65:385:17
2011.65:385:17
2111.65:385:17
2211.65:395:16
2311.65:395:16
2411.65:395:16
2511.65:395:16
2611.65:395:16
2711.65:405:16
2811.65:405:16
2911.65:405:16
3011.65:405:16
3111.65:415:16

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.04 kWh/m².

For context, solar energy here swings from a low near 4.61 kWh/m² to a high of 6.36 kWh/m² in September across the year — May's 5.04 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
314.9Bright
Planning a trip in May

Hazard calendar for Jombang

In seasonPeak

None of Jombang's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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

Jombang's monsoon runs November–April, when most of the year's rain falls.

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

Is May a good time to visit Jombang?

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

3.9
Sightseeing
5th-best month of the year
5.8
Beach & pool
6th-best month of the year

May is a weaker month for outdoor sightseeing in Jombang.

What to pack for Jombang in May

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

In May, Jombang sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

UV index in Jombang 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 Jombang peaks around March 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 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 highExtremeExtremeMar 18UV 13Jun 15UV 7
UV index (midday)Level
Jan12Extreme
Feb10Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun7High
Jul9Very high
Aug11Extreme
Sep12Extreme
Oct11Extreme
Nov10Very high
Dec11Extreme

Air quality in Jombang 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 Jombang is worst in May — around 101 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyMay 13101 µg/m³Aug 2267 µg/m³
PM2.5 (µg/m³)Level
Jan76Unhealthy
Feb71Unhealthy
Mar87Unhealthy
Apr99Unhealthy
May101Unhealthy
Jun95Unhealthy
Jul81Unhealthy
Aug66Unhealthy
Sep69Unhealthy
Oct80Unhealthy
Nov87Unhealthy
Dec81Unhealthy
Location & terrain

Where is Jombang?

Jombang sits at 7.5°S, 112.2°E, 43 m above sea level, in Indonesia. The nearest listed city is Diwek, 4.0 km away.

Topography around Jombang

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

Within 3 km, the terrain around Jombang has only modest variations in elevation — a maximum elevation change of 31 m around an average of 42 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 138 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,305 m.

The land around Jombang is covered by artificial surfaces (47%) and cropland (30%) within 3 km, cropland (59%) and trees (21%) within 16 km, and trees (46%) and cropland (34%) within 80 km.

3 km
31 m
16 km
138 m
80 km
3,305 m
treesgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: Diwek 4.0 km · Mojoagung 13 km · Kertosono 15 km · Ngoro 16 km · Soko 22 km · Mojokerto 24 km · Pare 25 km · Gampengrejo 33 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 Jombang (-7.546°, 112.2331°, elevation 43 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). 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).