Lumajang weather in May

In May, Lumajang sees average daytime highs of 29°C and overnight lows near 24°C, with 93 mm of rain across 15.7 wet days and about 11.6 hours of daylight. It is the 7th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 22% 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 Lumajang's 2nd-clearest and 6th-windiest month. For the whole year in context, see Lumajang's year-round climate.

Daytime high
29°
7th warmest
Overnight low
24°
6th coldest
Rainfall
93 mm
15.7 wet days
Daylight
11 h 36 min
5:34 AM – 5:12 PM
Cloud cover
62%
2nd clearest
Wind
5 km/h
6th windiest
Solar energy
4.84 kWh/m²
Travel score
5.0
out of 10

Lumajang is district in Lumajang 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 29°C through the month.

A typical May day in Lumajang reaches about 29°C in the afternoon and slips back to 24°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, May runs about 1°C cooler than April and about 1°C warmer than June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12924
22924
32924
42924
52924
62924
72924
82924
92924
102924
112924
122924
132924
142924
152924
162923
172923
182823
192823
202823
212823
222823
232823
242823
252823
262823
272823
282823
292823
302823
312823

How May really feels in Lumajang

Once humidity and wind are folded in, May averages 14 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
14
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.

Lumajang weather by month

How May compares with the rest of the year at a glance. May is the 7th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°35828.712.42.9
Feb29° / 24°34726.512.32.8
Mar30° / 24°28326.912.13.1
Apr29° / 24°1632311.83.6
May29° / 24°9315.711.65.0
Jun27° / 23°6212.711.55.9
Jul26° / 22°4411.311.66.3
Aug26° / 21°3510.411.76.5
Sep27° / 22°6712.1126.0
Oct28° / 23°9616.812.25.0
Nov29° / 24°22723.512.43.6
Dec29° / 24°3162712.53.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 24% of May, with mostly cloudy or overcast conditions the remaining 53%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
23961
33961
44060
54060
64060
74060
84258
94357
104357
114456
124555
134654
144852
154951
165050
175149
185149
195248
205248
215248
225248
235149
245248
255248
265149
275149
285050
294951
304852
314852

Chance of precipitation in May

Any precipitation

Lumajang gets around 93 mm of rain over 15.7 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 50% and peaks near 61% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
161
260
360
459
558
657
756
855
954
1053
1152
1251
1349
1448
1547
1646
1746
1845
1945
2045
2145
2245
2346
2446
2546
2646
2746
2846
2946
3046
3146

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 75% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
127325
227325
337225
437225
547224
647224
747224
857223
957223
1057322
1157421
1267321
1367420
1467519
1567618
1677518
1777617
1877617
1977716
2077815
2187715
2287814
2387814
2487913
2597813
2697813
2797912
2897912
2997912
3098011
3198011

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 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 5:33 AM to 5:38 AM, and sunset from 5:16 PM to 5:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.75:335:16
211.75:335:16
311.75:335:15
411.75:335:15
511.75:335:15
611.75:335:14
711.75:335:14
811.75:335:14
911.75:335:14
1011.75:345:13
1111.75:345:13
1211.75:345:13
1311.65:345:13
1411.65:345:13
1511.65:345:12
1611.65:345:12
1711.65:355:12
1811.65:355:12
1911.65:355:12
2011.65:355:12
2111.65:355:12
2211.65:365:12
2311.65:365:12
2411.65:365:11
2511.65:365:11
2611.65:365:11
2711.65:375:11
2811.65:375:11
2911.65:375:11
3011.65:375:11
3111.65:385:11

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.84 kWh/m².

For context, solar energy here swings from a low near 4.52 kWh/m² to a high of 5.99 kWh/m² in October across the year — May's 4.84 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
314.7Bright
Planning a trip in May

Hazard calendar for Lumajang

In seasonPeak

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

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

Lumajang'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 Lumajang?

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

5.0
Sightseeing
5th-best month of the year
6.0
Beach & pool
5th-best month of the year

May is a reasonable time to visit Lumajang for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Lumajang in May

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

In May, Lumajang sees daytime highs around 29°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 16 days see rain.

light clothesrain gearsun protection

Sea temperature near Lumajang in May

The nearest coast averages about 28°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 29 km away) is warmest in March at about 29°C and coldest in August near 25°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul26Warm
Aug25Warm
Sep25Warm
Oct26Warm
Nov28Warm
Dec29Tropical

UV index in Lumajang in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Lumajang peaks around March 21 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 17 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 21UV 13Jun 17UV 8
UV index (midday)Level
Jan12Extreme
Feb10Extreme
Mar13Extreme
Apr13Extreme
May10Very high
Jun7Very high
Jul10Very high
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov12Extreme
Dec11Extreme

Air quality in Lumajang 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 Lumajang is worst in May — around 38 µg/m³ PM2.5 (poor), about 1.7× the cleanest month (September, 23 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMay 1138 µg/m³Sep 1523 µg/m³
PM2.5 (µg/m³)Level
Jan33Moderate
Feb31Moderate
Mar37Poor
Apr38Poor
May38Poor
Jun36Poor
Jul31Moderate
Aug25Moderate
Sep23Moderate
Oct26Moderate
Nov28Moderate
Dec30Moderate
Location & terrain

Where is Lumajang?

Lumajang sits at 8.1°S, 113.2°E, 56 m above sea level, in Indonesia. The nearest listed city is Kencong, 23 km away.

Topography around Lumajang

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

Within 3 km, the terrain around Lumajang has only modest variations in elevation — a maximum elevation change of 45 m around an average of 54 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 841 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,644 m.

The land around Lumajang is covered by cropland (51%) and artificial surfaces (31%) within 3 km, trees (60%) and cropland (29%) within 16 km, and trees (46%) and water (39%) within 80 km.

3 km
45 m
16 km
841 m
80 km
3,644 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Kencong 23 km · Probolinggo 42 km · Kraksaan 46 km · Jember 52 km · Dampit 53 km · Pasuruan 65 km · Gongdanglegi Kulon 65 km · Lawang 67 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 Lumajang (-8.1335°, 113.2248°, elevation 56 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).