Sentani weather in January

In January, Sentani sees average daytime highs of 28°C and overnight lows near 25°C, with 233 mm of rain across 26.9 wet days and about 12.1 hours of daylight. It is the 7th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 3% of the time in January, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of January to 12 h 06 min by month's end. Set against the rest of the year, January is Sentani's 9th-clearest and 3rd-windiest month. For the whole year in context, see Sentani's year-round climate.

Daytime high: 28°; 7th warmest
Overnight low: 25°; 9th coldest
Rainfall: 233 mm; 26.9 wet days
Daylight: 12 h 06 min; 5:43 AM – 5:51 PM
Cloud cover: 86%; 9th clearest
Wind: 12 km/h; 3rd windiest
Solar energy: 5.33 kWh/m²
Travel score: 3.4; out of 10

Sentani is capital of Jayapura Regency, Papua Province, Indonesia.

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

← December Sentani year-round climate February →Best places to visit in January

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical January day in Sentani reaches about 28°C in the afternoon and slips back to 25°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 29°C. Set against its neighbours, January runs on par with December and on par with February.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28	28
Avg low (°C)	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25

	Avg high (°C)	Avg low (°C)
1	28	25
2	28	25
3	28	25
4	28	25
5	28	25
6	28	25
7	28	25
8	28	25
9	28	25
10	28	25
11	28	25
12	28	25
13	28	25
14	28	25
15	28	25
16	28	25
17	28	25
18	28	25
19	28	25
20	28	25
21	28	25
22	28	25
23	28	25
24	28	25
25	28	25
26	28	25
27	28	25
28	28	25
29	28	25
30	28	25
31	28	25

How January really feels in Sentani

Once humidity and wind are folded in, January averages 15 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

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

The story in January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Sentani weather by month

How January compares with the rest of the year at a glance. January is the 7th-warmest and 4th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	28° / 25°	233	26.9	12.1	3.4
Feb	28° / 25°	226	24.2	12.1	3.4
Mar	28° / 25°	254	27.5	12	3.4
Apr	28° / 25°	242	27.4	11.9	3.3
May	29° / 25°	200	27.1	11.9	3.4
Jun	28° / 25°	201	26.5	11.9	3.5
Jul	28° / 25°	209	25.4	11.9	4.0
Aug	28° / 25°	198	24.8	11.9	4.0
Sep	28° / 25°	183	24.3	12	3.8
Oct	29° / 25°	183	25.3	12.1	3.6
Nov	29° / 25°	224	26.9	12.1	3.3
Dec	29° / 25°	256	28.1	12.1	3.2

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 3% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 8% of January, with mostly cloudy or overcast conditions the remaining 89%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	9	10	10	10	11	11	12	12	12	12	12	12	12	13	13	12	12	12	12	12	12	12	12	12	10	10	10	10	9	9	9
Cloudier (%)	91	90	90	90	89	89	88	88	88	88	88	88	88	87	87	88	88	88	88	88	88	88	88	88	90	90	90	90	91	91	91

	Clearer (%)	Cloudier (%)
1	9	91
2	10	90
3	10	90
4	10	90
5	11	89
6	11	89
7	12	88
8	12	88
9	12	88
10	12	88
11	12	88
12	12	88
13	12	88
14	13	87
15	13	87
16	12	88
17	12	88
18	12	88
19	12	88
20	12	88
21	12	88
22	12	88
23	12	88
24	12	88
25	10	90
26	10	90
27	10	90
28	10	90
29	9	91
30	9	91
31	9	91

Chance of precipitation in January

Any precipitation

Sentani gets around 233 mm of rain over 26.9 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 87% and peaks near 89% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	88	87	86	86	86	85	85	85	85	85	85	85	85	85	85	86	86	87	87	87	88	88	88	88	88	88	88	89	89	89	89

	Rain chance (%)
1	88
2	87
3	86
4	86
5	86
6	85
7	85
8	85
9	85
10	85
11	85
12	85
13	85
14	85
15	85
16	86
17	86
18	87
19	87
20	87
21	88
22	88
23	88
24	88
25	88
26	88
27	88
28	89
29	89
30	89
31	89

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 65% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Oppressive (%)	50	51	52	53	54	55	56	58	59	60	61	62	64	65	66	68	69	70	71	71	72	72	73	73	73	73	72	72	72	72	71
Miserable (%)	50	49	48	47	46	45	44	42	41	40	39	38	36	35	34	32	31	30	29	29	28	28	27	27	27	27	28	28	28	28	29

	Oppressive (%)	Miserable (%)
1	50	50
2	51	49
3	52	48
4	53	47
5	54	46
6	55	45
7	56	44
8	58	42
9	59	41
10	60	40
11	61	39
12	62	38
13	64	36
14	65	35
15	66	34
16	68	32
17	69	31
18	70	30
19	71	29
20	71	29
21	72	28
22	72	28
23	73	27
24	73	27
25	73	27
26	73	27
27	72	28
28	72	28
29	72	28
30	72	28
31	71	29

Wind in January

Winds average 12 km/h in January.

Across January, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	12	12	12	12	12	12	12	12	12	12	12	12	12	12	11	11	11	11	11	11	11	11	12	12	12	12	12	12	12	12	12
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	12	calm
2	12	calm
3	12	calm
4	12	calm
5	12	calm
6	12	calm
7	12	calm
8	12	calm
9	12	calm
10	12	calm
11	12	calm
12	12	calm
13	12	calm
14	12	calm
15	11	calm
16	11	calm
17	11	calm
18	11	calm
19	11	calm
20	11	calm
21	11	calm
22	11	calm
23	12	calm
24	12	calm
25	12	calm
26	12	calm
27	12	calm
28	12	calm
29	12	calm
30	12	calm
31	12	calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 12 h 06 min at the start of January to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over January. Sunrise moves from 5:37 AM to 5:48 AM, and sunset from 5:45 PM to 5:55 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1
Sunrise (AM)	5:37	5:37	5:38	5:38	5:39	5:39	5:39	5:40	5:40	5:41	5:41	5:42	5:42	5:42	5:43	5:43	5:44	5:44	5:44	5:45	5:45	5:45	5:46	5:46	5:46	5:47	5:47	5:47	5:47	5:48	5:48
Sunset (PM)	5:45	5:46	5:46	5:47	5:47	5:48	5:48	5:48	5:49	5:49	5:50	5:50	5:50	5:51	5:51	5:51	5:52	5:52	5:52	5:52	5:53	5:53	5:53	5:53	5:54	5:54	5:54	5:54	5:54	5:55	5:55

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.1	5:37	5:45
2	12.1	5:37	5:46
3	12.1	5:38	5:46
4	12.1	5:38	5:47
5	12.1	5:39	5:47
6	12.1	5:39	5:48
7	12.1	5:39	5:48
8	12.1	5:40	5:48
9	12.1	5:40	5:49
10	12.1	5:41	5:49
11	12.1	5:41	5:50
12	12.1	5:42	5:50
13	12.1	5:42	5:50
14	12.1	5:42	5:51
15	12.1	5:43	5:51
16	12.1	5:43	5:51
17	12.1	5:44	5:52
18	12.1	5:44	5:52
19	12.1	5:44	5:52
20	12.1	5:45	5:52
21	12.1	5:45	5:53
22	12.1	5:45	5:53
23	12.1	5:46	5:53
24	12.1	5:46	5:53
25	12.1	5:46	5:54
26	12.1	5:47	5:54
27	12.1	5:47	5:54
28	12.1	5:47	5:54
29	12.1	5:47	5:54
30	12.1	5:48	5:55
31	12.1	5:48	5:55

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.33 kWh/m².

For context, solar energy here swings from a low near 4.49 kWh/m² to a high of 5.62 kWh/m² in October across the year — January's 5.33 kWh/m² sits near the top of that range.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.3	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.1	5.1
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	5.3	Bright
2	5.3	Bright
3	5.3	Bright
4	5.3	Bright
5	5.3	Bright
6	5.3	Bright
7	5.3	Bright
8	5.3	Bright
9	5.3	Bright
10	5.3	Bright
11	5.3	Bright
12	5.3	Bright
13	5.3	Bright
14	5.3	Bright
15	5.3	Bright
16	5.3	Bright
17	5.3	Bright
18	5.3	Bright
19	5.2	Bright
20	5.2	Bright
21	5.2	Bright
22	5.2	Bright
23	5.2	Bright
24	5.2	Bright
25	5.2	Bright
26	5.2	Bright
27	5.2	Bright
28	5.2	Bright
29	5.2	Bright
30	5.1	Bright
31	5.1	Bright

Planning a trip in January

Is January a good time to visit Sentani?

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

3.4

Sightseeing

6th-best month of the year

4.0

Beach & pool

7th-best month of the year

January is a weaker month for outdoor sightseeing in Sentani.

What to pack for Sentani in January

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

In January, Sentani sees daytime highs around 28°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

Sea temperature near Sentani 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 25 km away) is warmest in November at about 30°C and coldest in February near 29°C.

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	29	29	29	29	30	30	29	29	29	30	30	29
Comfort	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical	Tropical

	Sea temperature (°C)	Comfort
Jan	29	Tropical
Feb	29	Tropical
Mar	29	Tropical
Apr	29	Tropical
May	30	Tropical
Jun	30	Tropical
Jul	29	Tropical
Aug	29	Tropical
Sep	29	Tropical
Oct	30	Tropical
Nov	30	Tropical
Dec	29	Tropical

UV index in Sentani in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sentani peaks around March 10 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 11 (extreme).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	15	16	16	14	13	11	11	12	14	14	13	13
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	15	Extreme
Feb	16	Extreme
Mar	16	Extreme
Apr	14	Extreme
May	13	Extreme
Jun	11	Extreme
Jul	11	Extreme
Aug	12	Extreme
Sep	14	Extreme
Oct	14	Extreme
Nov	13	Extreme
Dec	13	Extreme

Location & terrain

Where is Sentani?

Sentani sits at 2.6°S, 140.5°E, 100 m above sea level, in Indonesia. The nearest listed city is Abepura, 14 km away.

Topography around Sentani

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

Within 3 km, the terrain around Sentani has significant variations in elevation — a maximum elevation change of 368 m around an average of 129 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,985 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,957 m.

The land around Sentani is covered by trees (63%) within 3 km, trees (74%) within 16 km, and trees (66%) and water (33%) within 80 km.

3 km

368 m

trees 63%

16 km

1,985 m

trees 74%

80 km

1,957 m

trees 66%

treesgrasslandcroplandartificial surfacesbare terrainwater

← December Sentani year-round climate February →Best places to visit in January

January weather nearby: Abepura 14 km · Jayapura 23 km · Wamena 243 km · Tiom 274 km · Mulia 308 km · Wewak 363 km · Agats 423 km · Timika 483 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

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 Sentani (-2.5691°, 140.5127°, elevation 100 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°C)	Avg low (°C)
1	28	25
2	28	25
3	28	25
4	28	25
5	28	25
6	28	25
7	28	25
8	28	25
9	28	25
10	28	25
11	28	25
12	28	25
13	28	25
14	28	25
15	28	25
16	28	25
17	28	25
18	28	25
19	28	25
20	28	25
21	28	25
22	28	25
23	28	25
24	28	25
25	28	25
26	28	25
27	28	25
28	28	25
29	28	25
30	28	25
31	28	25

	Clearer (%)	Cloudier (%)
1	9	91
2	10	90
3	10	90
4	10	90
5	11	89
6	11	89
7	12	88
8	12	88
9	12	88
10	12	88
11	12	88
12	12	88
13	12	88
14	13	87
15	13	87
16	12	88
17	12	88
18	12	88
19	12	88
20	12	88
21	12	88
22	12	88
23	12	88
24	12	88
25	10	90
26	10	90
27	10	90
28	10	90
29	9	91
30	9	91
31	9	91

	Rain chance (%)
1	88
2	87
3	86
4	86
5	86
6	85
7	85
8	85
9	85
10	85
11	85
12	85
13	85
14	85
15	85
16	86
17	86
18	87
19	87
20	87
21	88
22	88
23	88
24	88
25	88
26	88
27	88
28	89
29	89
30	89
31	89

	Oppressive (%)	Miserable (%)
1	50	50
2	51	49
3	52	48
4	53	47
5	54	46
6	55	45
7	56	44
8	58	42
9	59	41
10	60	40
11	61	39
12	62	38
13	64	36
14	65	35
15	66	34
16	68	32
17	69	31
18	70	30
19	71	29
20	71	29
21	72	28
22	72	28
23	73	27
24	73	27
25	73	27
26	73	27
27	72	28
28	72	28
29	72	28
30	72	28
31	71	29

	Avg high (°C)	Avg low (°C)
1	28	25
2	28	25
3	28	25
4	28	25
5	28	25
6	28	25
7	28	25
8	28	25
9	28	25
10	28	25
11	28	25
12	28	25
13	28	25
14	28	25
15	28	25
16	28	25
17	28	25
18	28	25
19	28	25
20	28	25
21	28	25
22	28	25
23	28	25
24	28	25
25	28	25
26	28	25
27	28	25
28	28	25
29	28	25
30	28	25
31	28	25

	Clearer (%)	Cloudier (%)
1	9	91
2	10	90
3	10	90
4	10	90
5	11	89
6	11	89
7	12	88
8	12	88
9	12	88
10	12	88
11	12	88
12	12	88
13	12	88
14	13	87
15	13	87
16	12	88
17	12	88
18	12	88
19	12	88
20	12	88
21	12	88
22	12	88
23	12	88
24	12	88
25	10	90
26	10	90
27	10	90
28	10	90
29	9	91
30	9	91
31	9	91

	Rain chance (%)
1	88
2	87
3	86
4	86
5	86
6	85
7	85
8	85
9	85
10	85
11	85
12	85
13	85
14	85
15	85
16	86
17	86
18	87
19	87
20	87
21	88
22	88
23	88
24	88
25	88
26	88
27	88
28	89
29	89
30	89
31	89

	Oppressive (%)	Miserable (%)
1	50	50
2	51	49
3	52	48
4	53	47
5	54	46
6	55	45
7	56	44
8	58	42
9	59	41
10	60	40
11	61	39
12	62	38
13	64	36
14	65	35
15	66	34
16	68	32
17	69	31
18	70	30
19	71	29
20	71	29
21	72	28
22	72	28
23	73	27
24	73	27
25	73	27
26	73	27
27	72	28
28	72	28
29	72	28
30	72	28
31	71	29

	Avg high (°C)	Avg low (°C)
1	28	25
2	28	25
3	28	25
4	28	25
5	28	25
6	28	25
7	28	25
8	28	25
9	28	25
10	28	25
11	28	25
12	28	25
13	28	25
14	28	25
15	28	25
16	28	25
17	28	25
18	28	25
19	28	25
20	28	25
21	28	25
22	28	25
23	28	25
24	28	25
25	28	25
26	28	25
27	28	25
28	28	25
29	28	25
30	28	25
31	28	25

	Clearer (%)	Cloudier (%)
1	9	91
2	10	90
3	10	90
4	10	90
5	11	89
6	11	89
7	12	88
8	12	88
9	12	88
10	12	88
11	12	88
12	12	88
13	12	88
14	13	87
15	13	87
16	12	88
17	12	88
18	12	88
19	12	88
20	12	88
21	12	88
22	12	88
23	12	88
24	12	88
25	10	90
26	10	90
27	10	90
28	10	90
29	9	91
30	9	91
31	9	91

	Rain chance (%)
1	88
2	87
3	86
4	86
5	86
6	85
7	85
8	85
9	85
10	85
11	85
12	85
13	85
14	85
15	85
16	86
17	86
18	87
19	87
20	87
21	88
22	88
23	88
24	88
25	88
26	88
27	88
28	89
29	89
30	89
31	89

	Oppressive (%)	Miserable (%)
1	50	50
2	51	49
3	52	48
4	53	47
5	54	46
6	55	45
7	56	44
8	58	42
9	59	41
10	60	40
11	61	39
12	62	38
13	64	36
14	65	35
15	66	34
16	68	32
17	69	31
18	70	30
19	71	29
20	71	29
21	72	28
22	72	28
23	73	27
24	73	27
25	73	27
26	73	27
27	72	28
28	72	28
29	72	28
30	72	28
31	71	29