Blitar weather in December

In December, Blitar sees average daytime highs of 29°C and overnight lows near 22°C, with 411 mm of rain across 28.3 wet days and about 12.5 hours of daylight. It is the 8th-warmest and 1st-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 1% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 24 min at the start of December to 12 h 30 min by month's end. Set against the rest of the year, December is Blitar's 11th-clearest and 7th-windiest month. For the whole year in context, see Blitar's year-round climate.

Daytime high
29°
8th warmest
Overnight low
22°
12th coldest
Rainfall
411 mm
28.3 wet days
Daylight
12 h 30 min
5:13 AM – 5:42 PM
Cloud cover
92%
11th clearest
Wind
5 km/h
7th windiest
Solar energy
4.39 kWh/m²
Travel score
3.1
out of 10

Blitar is city in East Java Province, Indonesia.

Density
4,948/km²
people per km²
Founded
1906

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical December day in Blitar reaches about 29°C in the afternoon and slips back to 22°C overnight — a 7°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, December runs on par with November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12922
22922
32922
42922
52922
62922
72922
82922
92922
102922
112922
122922
132922
142922
152922
162922
172922
182922
192922
202922
212922
222922
232922
242922
252922
262922
272922
282922
292922
302922
312922

How December really feels in Blitar

Once humidity and wind are folded in, December averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Blitar weather by month

How December compares with the rest of the year at a glance. December is the 8th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 22°34229.312.43.0
Feb29° / 22°31626.912.32.9
Mar29° / 22°3842912.13.0
Apr29° / 22°32827.111.83.1
May29° / 21°15518.711.64.3
Jun29° / 20°11112.711.55.3
Jul28° / 19°617.911.66.5
Aug28° / 18°285.211.76.6
Sep29° / 19°577.4125.7
Oct29° / 21°1831712.24.4
Nov29° / 22°40326.412.43.2
Dec29° / 22°41128.312.53.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 4% of December, with mostly cloudy or overcast conditions the remaining 95%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1892
2892
3694
4694
5595
6595
7595
8595
9496
10496
11496
12496
13496
14496
15496
16496
17496
18595
19595
20595
21595
22595
23595
24595
25595
26595
27595
28595
29595
30595
31595

Chance of precipitation in December

Any precipitation

Blitar gets around 411 mm of rain over 28.3 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 91% and peaks near 93% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
191
292
392
492
592
692
792
893
993
1093
1192
1292
1392
1492
1592
1692
1792
1891
1991
2091
2190
2290
2390
2490
2590
2690
2791
2891
2991
3091
3191

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)
1595
2595
3595
4595
5595
6595
7595
8595
9595
10595
11595
12595
13595
14595
15595
16595
17694
18694
19694
20793
21793
22892
23892
24892
25991
26991
27991
28991
29991
30991
31892

Wind in December

Winds average 5 km/h in December.

Across December, 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 December

DaylightNight

Daylight runs from about 12 h 24 min at the start of December to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 5:08 AM to 5:21 AM, and sunset from 5:34 PM to 5:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:085:34
212.45:085:35
312.45:095:35
412.45:095:36
512.45:095:36
612.55:105:37
712.55:105:37
812.55:105:38
912.55:115:38
1012.55:115:39
1112.55:115:39
1212.55:125:40
1312.55:125:40
1412.55:135:41
1512.55:135:41
1612.55:135:42
1712.55:145:42
1812.55:145:43
1912.55:155:43
2012.55:155:43
2112.55:165:44
2212.55:165:44
2312.55:175:45
2412.55:175:45
2512.55:185:46
2612.55:185:46
2712.55:195:47
2812.55:195:47
2912.55:205:48
3012.55:205:48
3112.55:215:48

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.39 kWh/m².

For context, solar energy here swings from a low near 4.39 kWh/m² to a high of 5.84 kWh/m² in September across the year — December's 4.39 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.4Bright
64.4Bright
74.4Bright
84.4Bright
94.4Bright
104.4Bright
114.4Bright
124.4Bright
134.4Bright
144.4Bright
154.4Bright
164.4Bright
174.4Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.4Bright
254.4Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in December

Hazard calendar for Blitar

In seasonPeak

In December, Blitar sits inside its cyclone and rainy season season. The full year is below, with each hazard's peak months called out.

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

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

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

Is December a good time to visit Blitar?

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

3.1
Sightseeing
8th-best month of the year
3.9
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Blitar.

What to pack for Blitar in December

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

In December, Blitar sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. About 28 days see rain.

light clothesrain gear

Sea temperature near Blitar in December

The nearest coast averages about 29°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 31 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 Blitar in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Blitar peaks around March 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 16 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 17UV 14Jun 16UV 8
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar14Extreme
Apr13Extreme
May10Very high
Jun7Very high
Jul10Very high
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov10Very high
Dec13Extreme

Air quality in Blitar in December

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Blitar is worst in April — around 43 µg/m³ PM2.5 (poor), about 1.7× the cleanest month (September, 25 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateApr 1843 µg/m³Sep 1625 µg/m³
PM2.5 (µg/m³)Level
Jan34Moderate
Feb33Moderate
Mar39Poor
Apr43Poor
May41Poor
Jun37Poor
Jul31Moderate
Aug27Moderate
Sep25Moderate
Oct27Moderate
Nov30Moderate
Dec30Moderate
Location & terrain

Where is Blitar?

Blitar sits at 8.1°S, 112.2°E, 180 m above sea level, in Indonesia. The nearest listed city is Ngunut, 17 km away.

Topography around Blitar

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

Within 3 km, the terrain around Blitar has only modest variations in elevation — a maximum elevation change of 87 m around an average of 177 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 547 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,307 m.

The land around Blitar is covered by artificial surfaces (47%), trees (27%) and cropland (24%) within 3 km, trees (64%) and cropland (21%) within 16 km, and trees (53%) and water (24%) within 80 km.

3 km
87 m
16 km
547 m
80 km
3,307 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Ngunut 17 km · Kedungwaru 28 km · Tulungagung 29 km · Boyolangu 30 km · Sumberpucung 35 km · Kediri 35 km · Pare 37 km · Gampengrejo 40 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 Blitar (-8.0983°, 112.1681°, elevation 180 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).