Jaten weather in January

In January, Jaten sees average daytime highs of 30°C and overnight lows near 23°C, with 332 mm of rain across 27.9 wet days and about 12.4 hours of daylight. It is the 12th-warmest and 4th-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 1% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 12 h 24 min at the start of January to 12 h 18 min by month's end. Set against the rest of the year, January is Jaten's 10th-clearest and 7th-windiest month. For the whole year in context, see Jaten's year-round climate.

Daytime high
30°
12th warmest
Overnight low
23°
6th coldest
Rainfall
332 mm
27.9 wet days
Daylight
12 h 24 min
5:34 AM – 5:58 PM
Cloud cover
89%
10th clearest
Wind
5 km/h
7th windiest
Solar energy
4.69 kWh/m²
Travel score
2.7
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

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

A typical January day in Jaten reaches about 30°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 28°C and 32°C. Set against its neighbours, January runs on par with December and on par with February.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263023
273023
283023
293023
303023
313023

How January really feels in Jaten

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

Jaten weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 4th-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 January

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 6% of January, with mostly cloudy or overcast conditions the remaining 93%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1793
2892
3991
4991
5991
6991
7991
81090
91090
101090
111090
121090
13991
14892
15892
16892
17892
18892
19793
20793
21793
22595
23595
24496
25496
26496
27496
28397
29397
30397
31397

Chance of precipitation in January

Any precipitation

Jaten gets around 332 mm of rain over 27.9 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 90% and peaks near 95% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
185
285
386
486
586
686
787
887
987
1087
1187
1288
1388
1489
1589
1690
1790
1891
1991
2092
2192
2293
2393
2494
2594
2694
2795
2895
2995
3095
3195

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the oppressive band about 91% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
12908
22908
32908
42908
51918
61918
71918
81918
91918
101918
111918
121918
131918
141918
150928
160928
170928
180928
190928
200928
210928
220928
230928
240928
250928
260928
270919
280919
290919
300919
310919

Wind in January

Winds average 5 km/h in January.

Across January, 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 January

DaylightNight

Daylight runs from about 12 h 24 min at the start of January to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over January. Sunrise moves from 5:27 AM to 5:40 AM, and sunset from 5:53 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:275:53
212.45:275:53
312.45:285:53
412.45:285:54
512.45:295:54
612.45:295:55
712.45:305:55
812.45:305:55
912.45:315:56
1012.45:315:56
1112.45:315:56
1212.45:325:56
1312.45:325:57
1412.45:335:57
1512.45:335:57
1612.45:345:58
1712.45:345:58
1812.45:355:58
1912.45:355:58
2012.45:365:58
2112.45:365:59
2212.45:365:59
2312.45:375:59
2412.45:375:59
2512.45:385:59
2612.45:385:59
2712.45:385:59
2812.35:396:00
2912.35:396:00
3012.35:396:00
3112.35:406:00

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.69 kWh/m² — the year's lowest.

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 — January's 4.69 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
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
164.7Bright
174.7Bright
184.7Bright
194.7Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.5Bright
314.5Bright
Planning a trip in January

Hazard calendar for Jaten

In seasonPeak

In January, 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 January a good time to visit Jaten?

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

2.7
Sightseeing
7th-best month of the year
3.8
Beach & pool
10th-best month of the year

January is a weaker month for outdoor sightseeing in Jaten.

What to pack for Jaten in January

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

In January, Jaten sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 28 days see rain.

light clothesrain gearsun protection

Sea temperature near Jaten in January

The nearest coast averages about 29°C in January — 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 January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 14 (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 January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January 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
January 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).