Jaten weather in December

In December, Jaten sees average daytime highs of 31°C and overnight lows near 23°C, with 341 mm of rain across 26.4 wet days and about 12.4 hours of daylight. It is the 10th-warmest and 2nd-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 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 24 min by month's end. Set against the rest of the year, December is Jaten's 11th-clearest and 5th-windiest month. For the whole year in context, see Jaten's year-round climate.

Daytime high
31°
10th warmest
Overnight low
23°
10th coldest
Rainfall
341 mm
26.4 wet days
Daylight
12 h 24 min
5:19 AM – 5:46 PM
Cloud cover
89%
11th clearest
Wind
5 km/h
5th windiest
Solar energy
4.75 kWh/m²
Travel score
2.7
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical December day in Jaten reaches about 31°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°C. Set against its neighbours, December runs about 1°C cooler than November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13124
23124
33124
43124
53124
63124
73124
83123
93123
103123
113123
123123
133123
143123
153123
163123
173123
183123
193123
203123
213123
223123
233123
243123
253123
263123
273123
283123
293123
303023
313023

How December really feels in Jaten

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.

Jaten weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°33227.912.42.7
Feb30° / 23°3402712.22.5
Mar31° / 23°34328.412.12.5
Apr31° / 24°26825.611.82.7
May31° / 23°12716.811.73.7
Jun31° / 23°7110.111.64.3
Jul31° / 22°436.111.64.8
Aug32° / 22°193.711.84.8
Sep32° / 23°404.8124.2
Oct33° / 23°14412.912.23.4
Nov32° / 24°29522.912.32.7
Dec31° / 23°34126.412.42.7

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 5% of December, with mostly cloudy or overcast conditions the remaining 94%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1793
2694
3694
4694
5694
6595
7595
8595
9595
10595
11595
12595
13595
14595
15595
16595
17595
18595
19595
20595
21595
22595
23595
24694
25694
26694
27694
28694
29694
30793
31793

Chance of precipitation in December

Any precipitation

Jaten gets around 341 mm of rain over 26.4 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 85% and peaks near 87% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
185
285
386
486
586
687
787
887
987
1087
1187
1287
1387
1486
1586
1686
1785
1885
1984
2084
2183
2283
2383
2483
2583
2683
2783
2884
2984
3085
3185

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 88% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
138512
238512
338512
438512
538512
638512
738512
838611
928711
1028711
1128711
1228711
1328711
1428711
1528711
1628810
1718910
1818910
1918910
2018910
2118910
222899
232899
242899
252899
262899
272908
282908
292908
302908
312908

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 6 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
216calm
226calm
236calm
246calm
256calm
266calm
276calm
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 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 5:27 AM, and sunset from 5:38 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:145:38
212.45:145:39
312.45:145:39
412.45:155:40
512.45:155:40
612.45:155:41
712.45:165:41
812.45:165:42
912.45:175:42
1012.45:175:43
1112.45:175:43
1212.45:185:44
1312.45:185:44
1412.45:195:45
1512.45:195:45
1612.45:195:46
1712.45:205:46
1812.45:205:47
1912.45:215:47
2012.45:215:48
2112.45:225:48
2212.45:225:49
2312.45:235:49
2412.45:235:50
2512.45:245:50
2612.45:245:50
2712.45:255:51
2812.45:255:51
2912.45:265:52
3012.45:265:52
3112.45:275:53

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.75 kWh/m².

For context, solar energy here swings from a low near 4.69 kWh/m² to a high of 6.08 kWh/m² in September across the year — December's 4.75 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in December

Hazard calendar for Jaten

In seasonPeak

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

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

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

Is December a good time to visit Jaten?

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

2.7
Sightseeing
7th-best month of the year
4.0
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Jaten.

What to pack for Jaten in December

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

In December, Jaten sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 26 days see rain.

light clothesrain gearsun protection

Sea temperature near Jaten 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 68 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 Jaten 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 Jaten peaks around March 13 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 14 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeVery highExtremeMar 13UV 14Jun 14UV 7
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar14Extreme
Apr12Extreme
May8Very high
Jun7Very high
Jul9Very high
Aug11Extreme
Sep13Extreme
Oct13Extreme
Nov9Very high
Dec11Extreme

Air quality in Jaten 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 Jaten is worst in May — around 54 µg/m³ PM2.5 (poor), about 1.7× the cleanest month (September, 32 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorMay 1254 µg/m³Sep 1333 µg/m³
PM2.5 (µg/m³)Level
Jan43Poor
Feb43Poor
Mar49Poor
Apr52Poor
May54Poor
Jun47Poor
Jul40Poor
Aug34Moderate
Sep32Moderate
Oct36Poor
Nov39Poor
Dec39Poor
Location & terrain

Where is Jaten?

Jaten sits at 7.6°S, 110.9°E, 113 m above sea level, in Indonesia. The nearest listed city is Surakarta, 8.0 km away.

Topography around Jaten

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

Within 3 km, the terrain around Jaten has only modest variations in elevation — a maximum elevation change of 41 m around an average of 109 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 396 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,224 m.

The land around Jaten is covered by cropland (49%) and artificial surfaces (34%) within 3 km, trees (36%), cropland (36%) and artificial surfaces (26%) within 16 km, and trees (62%) and cropland (25%) within 80 km.

3 km
41 m
16 km
396 m
80 km
3,224 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Surakarta 8.0 km · Grogol 9.0 km · Baki 13 km · Colomadu 17 km · Kartasura 18 km · Ngemplak 20 km · Gatak 21 km · Sragen 22 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 Jaten (-7.5772°, 110.8975°, elevation 113 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. 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).