Rembangan weather in December

In December, Rembangan sees average daytime highs of 30°C and overnight lows near 25°C, with 285 mm of rain across 28.4 wet days and about 12.4 hours of daylight. It is the 9th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 2% 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 24 min by month's end. Set against the rest of the year, December is Rembangan's 11th-clearest and 7th-windiest month. For the whole year in context, see Rembangan's year-round climate.

Daytime high
30°
9th warmest
Overnight low
25°
9th coldest
Rainfall
285 mm
28.4 wet days
Daylight
12 h 24 min
5:19 AM – 5:42 PM
Cloud cover
88%
11th clearest
Wind
9 km/h
7th windiest
Solar energy
5.12 kWh/m²
Travel score
2.9
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical December day in Rembangan reaches about 30°C in the afternoon and slips back to 25°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 31°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)
13025
23025
33025
43025
53025
63025
73025
83025
93025
103025
113025
123025
133025
143025
153025
163025
173025
183025
193025
203025
213025
222925
232925
242925
252925
262925
272925
282925
292925
302925
312925

How December really feels in Rembangan

Once humidity and wind are folded in, December 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 December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Rembangan weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 25°28928.612.33.0
Feb29° / 25°25226.412.22.9
Mar30° / 25°23528.2123.0
Apr30° / 25°19924.911.93.2
May30° / 25°10617.311.74.2
Jun30° / 25°7111.611.65.0
Jul30° / 24°397.311.65.6
Aug30° / 24°184.611.85.9
Sep30° / 25°305.7125.4
Oct31° / 25°9614.112.14.3
Nov30° / 25°20624.312.33.1
Dec30° / 25°28528.412.42.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 6% of December, with mostly cloudy or overcast conditions the remaining 91%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11090
21090
31090
41090
51090
61090
71090
8991
9991
10991
11892
12892
13892
14892
15892
16892
17892
18793
19793
20793
21793
22793
23793
24793
25793
26793
27793
28892
29892
30892
31892

Chance of precipitation in December

Any precipitation

Rembangan gets around 285 mm of rain over 28.4 wet days in December. 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 (%)
189
290
390
491
591
692
792
892
992
1092
1193
1293
1393
1493
1592
1692
1792
1892
1992
2091
2191
2291
2391
2491
2591
2691
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 56% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
15644
25644
35545
45545
55446
65446
75347
85347
95248
105248
115248
125248
135347
145347
155446
165545
175545
185644
195743
205743
215842
225842
235941
245941
255941
266040
276040
286040
296040
306040
316040

Wind in December

Winds average 9 km/h in December.

Across December, daily wind ranges from about 8 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in December

DaylightNight

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

Days grow by about 0 minutes over December. Sunrise moves from 5:14 AM to 5:26 AM, and sunset from 5:35 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:145:35
212.45:145:36
312.45:145:36
412.45:145:37
512.45:155:37
612.45:155:38
712.45:165:38
812.45:165:39
912.45:165:39
1012.45:175:39
1112.45:175:40
1212.45:175:40
1312.45:185:41
1412.45:185:41
1512.45:195:42
1612.45:195:42
1712.45:205:43
1812.45:205:43
1912.45:215:44
2012.45:215:44
2112.45:215:45
2212.45:225:45
2312.45:225:46
2412.45:235:46
2512.45:235:47
2612.45:245:47
2712.45:245:48
2812.45:255:48
2912.45:255:48
3012.45:265:49
3112.45:265:49

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.12 kWh/m².

For context, solar energy here swings from a low near 4.96 kWh/m² to a high of 6.71 kWh/m² in September across the year — December's 5.12 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in December

Hazard calendar for Rembangan

In seasonPeak

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

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

Rembangan'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 Rembangan?

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

2.9
Sightseeing
11th-best month of the year
3.9
Beach & pool
11th-best month of the year

December is a weaker month for outdoor sightseeing in Rembangan.

What to pack for Rembangan in December

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

In December, Rembangan sees daytime highs around 30°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 28 days see rain.

light clothesrain gearsun protection

Sea temperature near Rembangan in December

The nearest coast averages about 30°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in November at about 30°C and coldest in August near 28°C.

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

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun29Tropical
Jul29Tropical
Aug28Tropical
Sep29Tropical
Oct29Tropical
Nov30Tropical
Dec30Tropical

UV index in Rembangan in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rembangan peaks around March 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 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 highExtremeVery highMar 16UV 14Nov 16UV 8
UV index (midday)Level
Jan11Extreme
Feb12Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun8Very high
Jul9Very high
Aug11Extreme
Sep12Extreme
Oct11Extreme
Nov7Very high
Dec11Extreme

Air quality in Rembangan 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 Rembangan is worst in May — around 45 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMay 1944 µg/m³Feb 1129 µg/m³
PM2.5 (µg/m³)Level
Jan31Moderate
Feb29Moderate
Mar35Poor
Apr39Poor
May45Poor
Jun42Poor
Jul38Poor
Aug35Poor
Sep37Poor
Oct39Poor
Nov37Poor
Dec34Moderate
Location & terrain

Where is Rembangan?

Rembangan sits at 6.7°S, 111.3°E, 11 m above sea level, in Indonesia. The nearest listed city is Lasem, 12 km away.

Topography around Rembangan

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

Within 3 km, the terrain around Rembangan has only modest variations in elevation — a maximum elevation change of 24 m around an average of 6 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 299 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,559 m.

The land around Rembangan is covered by water (45%) and artificial surfaces (20%) within 3 km, water (46%) and cropland (26%) within 16 km, and trees (35%), water (34%) and cropland (25%) within 80 km.

3 km
24 m
16 km
299 m
80 km
1,559 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Lasem 12 km · Juwana 21 km · Blora 31 km · Pati 34 km · Tayu 37 km · Jekulo 47 km · Baekrajan 54 km · Gebog 55 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 Rembangan (-6.7036°, 111.3416°, 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).