Bojonegoro weather in January

In January, Bojonegoro sees average daytime highs of 31°C and overnight lows near 24°C, with 353 mm of rain across 29.1 wet days and about 12.4 hours of daylight. It is the 11th-warmest and 1st-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 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 Bojonegoro's 11th-clearest and 4th-windiest month. For the whole year in context, see Bojonegoro's year-round climate.

Daytime high
31°
11th warmest
Overnight low
24°
8th coldest
Rainfall
353 mm
29.1 wet days
Daylight
12 h 24 min
5:31 AM – 5:53 PM
Cloud cover
89%
11th clearest
Wind
7 km/h
4th windiest
Solar energy
4.79 kWh/m²
Travel score
2.3
out of 10

Bojonegoro is district in Bojonegoro Regency, East Java Province, Indonesia.

Density
1,866/km²
people per km²

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

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

A typical January day in Bojonegoro reaches about 31°C in the afternoon and slips back to 24°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 33°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)
13224
23224
33224
43224
53224
63224
73224
83224
93224
103124
113124
123124
133124
143124
153124
163124
173124
183124
193124
203124
213124
223124
233124
243124
253124
263124
273124
283124
293124
303124
313124

How January really feels in Bojonegoro

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.

Bojonegoro weather by month

How January compares with the rest of the year at a glance. January is the 11th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°35329.112.42.3
Feb31° / 24°35227.312.22.2
Mar32° / 24°33928.9122.3
Apr32° / 24°22624.511.82.6
May32° / 24°9815.311.73.6
Jun32° / 23°498.611.64.2
Jul32° / 22°264.411.64.5
Aug33° / 22°92.311.84.4
Sep34° / 23°243.5123.7
Oct34° / 24°9310.812.22.9
Nov33° / 24°23422.412.32.3
Dec32° / 24°33527.812.42.3

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
2793
3991
4991
5991
6991
7991
8991
9991
10991
11991
12991
13991
14991
15991
16892
17793
18793
19793
20694
21694
22694
23694
24595
25595
26595
27595
28595
29496
30496
31496

Chance of precipitation in January

Any precipitation

Bojonegoro gets around 353 mm of rain over 29.1 wet days in January, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 93% and peaks near 98% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
189
290
390
490
590
690
790
890
990
1091
1191
1291
1391
1492
1592
1693
1793
1894
1994
2095
2196
2296
2397
2497
2598
2698
2798
2898
2998
3098
3198

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 60% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
15941
25941
36040
46040
56139
66139
76238
86238
96337
106337
116337
126436
136436
146436
156337
166337
176238
186238
196139
206040
215941
225842
235842
245743
255743
265743
275743
285842
295842
305941
315941

Wind in January

Winds average 7 km/h in January.

Across January, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

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 5:23 AM to 5:36 AM, and sunset from 5:48 PM to 5:55 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:235:48
212.45:245:48
312.45:245:49
412.45:255:49
512.45:255:49
612.45:265:50
712.45:265:50
812.45:275:51
912.45:275:51
1012.45:285:51
1112.45:285:52
1212.45:295:52
1312.45:295:52
1412.45:305:52
1512.45:305:53
1612.45:315:53
1712.45:315:53
1812.45:315:53
1912.45:325:54
2012.45:325:54
2112.45:335:54
2212.45:335:54
2312.35:345:54
2412.35:345:55
2512.35:345:55
2612.35:355:55
2712.35:355:55
2812.35:355:55
2912.35:365:55
3012.35:365:55
3112.35:365:55

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.79 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.79 kWh/m² to a high of 6.58 kWh/m² in September across the year — January's 4.79 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
314.7Bright
Planning a trip in January

Hazard calendar for Bojonegoro

In seasonPeak

In January, Bojonegoro sits inside its cyclone and monsoon season. The full year is below, with each hazard's peak months called out.

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

Bojonegoro'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 January a good time to visit Bojonegoro?

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

2.3
Sightseeing
8th-best month of the year
3.6
Beach & pool
10th-best month of the year

January is a weaker month for outdoor sightseeing in Bojonegoro.

What to pack for Bojonegoro in January

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

In January, Bojonegoro sees daytime highs around 31°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 29 days see rain.

light clothesrain gearsun protection

Sea temperature near Bojonegoro 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 41 km away) 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 Bojonegoro in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bojonegoro peaks around March 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 15 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 highMar 17UV 13Jun 15UV 7
UV index (midday)Level
Jan12Extreme
Feb10Extreme
Mar13Extreme
Apr11Extreme
May9Very high
Jun7High
Jul9Very high
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov9Very high
Dec10Extreme

Air quality in Bojonegoro 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 Bojonegoro is worst in May — around 64 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorMay 1764 µg/m³Dec 2343 µg/m³
PM2.5 (µg/m³)Level
Jan44Poor
Feb45Poor
Mar53Poor
Apr59Unhealthy
May64Unhealthy
Jun60Unhealthy
Jul54Poor
Aug48Poor
Sep47Poor
Oct49Poor
Nov48Poor
Dec43Poor
Location & terrain

Where is Bojonegoro?

Bojonegoro sits at 7.2°S, 111.9°E, 24 m above sea level, in Indonesia. The nearest listed city is Babat, 31 km away.

Topography around Bojonegoro

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

Within 3 km, the terrain around Bojonegoro has only modest variations in elevation — a maximum elevation change of 45 m around an average of 19 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 489 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,526 m.

The land around Bojonegoro is covered by artificial surfaces (34%), cropland (30%) and trees (27%) within 3 km, cropland (52%) and trees (36%) within 16 km, and cropland (37%), trees (36%) and water (20%) within 80 km.

3 km
45 m
16 km
489 m
80 km
2,526 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Babat 31 km · Cepu 32 km · Tuban 35 km · Nganjuk 51 km · Kertosono 54 km · Blora 55 km · Ngawi 56 km · Jombang 59 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 Bojonegoro (-7.1502°, 111.8817°, elevation 24 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).