Kasulu weather in January

In January, Kasulu sees average daytime highs of 25°C and overnight lows near 17°C, with 235 mm of rain across 28.3 wet days and about 12.2 hours of daylight. It is the 11th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 3% of the time in January, and the air most often feels humid.

Daylight stretches from about 12 h 18 min at the start of January to 12 h 12 min by month's end. Set against the rest of the year, January is Kasulu's 10th-clearest and 11th-windiest month. For the whole year in context, see Kasulu's year-round climate.

Daytime high: 25°; 11th warmest
Overnight low: 17°; 6th coldest
Rainfall: 235 mm; 28.3 wet days
Daylight: 12 h 12 min; 7:02 AM – 7:16 PM
Cloud cover: 82%; 10th clearest
Wind: 4 km/h; 11th windiest
Solar energy: 5.35 kWh/m²
Travel score: 3.8; out of 10

Kasulu is city in Kigoma, Tanzania.

Density: 271/km²; people per km²
Founded: 1500

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

← December Kasulu 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 25°C through the month.

A typical January day in Kasulu reaches about 25°C in the afternoon and slips back to 17°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 27°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)	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	26	26	26	26	26	26
Avg low (°C)	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17

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

Kasulu weather by month

How January compares with the rest of the year at a glance. January is the 11th-warmest and 2nd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	25° / 17°	235	28.3	12.2	3.8
Feb	26° / 17°	189	24.3	12.1	4.0
Mar	26° / 17°	214	27.3	12	4.0
Apr	25° / 17°	172	23.7	11.9	4.3
May	26° / 17°	68	11.1	11.8	6.4
Jun	27° / 16°	14	3	11.7	7.6
Jul	27° / 16°	3	0.8	11.8	7.9
Aug	29° / 17°	11	1.8	11.9	6.8
Sep	29° / 18°	36	6.4	12	5.7
Oct	28° / 18°	136	17	12.1	4.9
Nov	26° / 17°	231	25.5	12.2	4.0
Dec	25° / 17°	257	28.9	12.3	3.8

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 10% of January, with mostly cloudy or overcast conditions the remaining 88%.

	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 (%)	12	11	11	11	11	11	11	11	11	11	10	10	11	11	11	11	11	12	13	13	14	14	14	14	14	15	15	16	16	16	17
Cloudier (%)	88	89	89	89	89	89	89	89	89	89	90	90	89	89	89	89	89	88	87	87	86	86	86	86	86	85	85	84	84	84	83

	Clearer (%)	Cloudier (%)
1	12	88
2	11	89
3	11	89
4	11	89
5	11	89
6	11	89
7	11	89
8	11	89
9	11	89
10	11	89
11	10	90
12	10	90
13	11	89
14	11	89
15	11	89
16	11	89
17	11	89
18	12	88
19	13	87
20	13	87
21	14	86
22	14	86
23	14	86
24	14	86
25	14	86
26	15	85
27	15	85
28	16	84
29	16	84
30	16	84
31	17	83

Chance of precipitation in January

Any precipitation

Kasulu gets around 235 mm of rain over 28.3 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 91% and peaks near 93% 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 (%)	93	92	92	92	92	92	92	92	92	92	92	92	92	92	92	92	91	91	91	91	91	90	90	90	90	90	90	90	90	90	90

	Rain chance (%)
1	93
2	92
3	92
4	92
5	92
6	92
7	92
8	92
9	92
10	92
11	92
12	92
13	92
14	92
15	92
16	92
17	91
18	91
19	91
20	91
21	91
22	90
23	90
24	90
25	90
26	90
27	90
28	90
29	90
30	90
31	90

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the humid band about 78% of days. Sticky, muggy-or-worse air turns up on roughly 21% 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
Humid (%)	81	81	81	81	81	81	81	81	81	81	81	81	81	81	81	80	80	79	79	79	78	78	77	76	76	75	75	74	73	73	72
Muggy (%)	19	19	19	19	19	19	19	19	19	19	19	19	19	19	19	20	20	21	21	21	22	22	23	24	24	25	25	26	27	27	28

	Humid (%)	Muggy (%)
1	81	19
2	81	19
3	81	19
4	81	19
5	81	19
6	81	19
7	81	19
8	81	19
9	81	19
10	81	19
11	81	19
12	81	19
13	81	19
14	81	19
15	81	19
16	80	20
17	80	20
18	79	21
19	79	21
20	79	21
21	78	22
22	78	22
23	77	23
24	76	24
25	76	24
26	75	25
27	75	25
28	74	26
29	73	27
30	73	27
31	72	28

Wind in January

Winds average 4 km/h in January.

Across January, daily wind ranges from about 4 km/h on the calmest days to 4 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)	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4
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	4	calm
2	4	calm
3	4	calm
4	4	calm
5	4	calm
6	4	calm
7	4	calm
8	4	calm
9	4	calm
10	4	calm
11	4	calm
12	4	calm
13	4	calm
14	4	calm
15	4	calm
16	4	calm
17	4	calm
18	4	calm
19	4	calm
20	4	calm
21	4	calm
22	4	calm
23	4	calm
24	4	calm
25	4	calm
26	4	calm
27	4	calm
28	4	calm
29	4	calm
30	4	calm
31	4	calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 12 h 18 min at the start of January to 12 h 12 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 6:55 AM to 7:07 AM, and sunset from 7:11 PM to 7:19 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)	12.3	12.3	12.3	12.3	12.3	12.3	12.3	12.3	12.3	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2	12.2
Sunrise (AM)	6:55	6:55	6:56	6:56	6:57	6:57	6:58	6:58	6:59	6:59	7:00	7:00	7:00	7:01	7:01	7:02	7:02	7:03	7:03	7:03	7:04	7:04	7:04	7:05	7:05	7:05	7:06	7:06	7:06	7:07	7:07
Sunset (PM)	7:11	7:11	7:11	7:12	7:12	7:13	7:13	7:13	7:14	7:14	7:14	7:15	7:15	7:15	7:16	7:16	7:16	7:17	7:17	7:17	7:17	7:18	7:18	7:18	7:18	7:18	7:18	7:19	7:19	7:19	7:19

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.3	6:55	7:11
2	12.3	6:55	7:11
3	12.3	6:56	7:11
4	12.3	6:56	7:12
5	12.3	6:57	7:12
6	12.3	6:57	7:13
7	12.3	6:58	7:13
8	12.3	6:58	7:13
9	12.3	6:59	7:14
10	12.2	6:59	7:14
11	12.2	7:00	7:14
12	12.2	7:00	7:15
13	12.2	7:00	7:15
14	12.2	7:01	7:15
15	12.2	7:01	7:16
16	12.2	7:02	7:16
17	12.2	7:02	7:16
18	12.2	7:03	7:17
19	12.2	7:03	7:17
20	12.2	7:03	7:17
21	12.2	7:04	7:17
22	12.2	7:04	7:18
23	12.2	7:04	7:18
24	12.2	7:05	7:18
25	12.2	7:05	7:18
26	12.2	7:05	7:18
27	12.2	7:06	7:18
28	12.2	7:06	7:19
29	12.2	7:06	7:19
30	12.2	7:07	7:19
31	12.2	7:07	7:19

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.35 kWh/m².

For context, solar energy here swings from a low near 4.9 kWh/m² to a high of 6.25 kWh/m² in September across the year — January's 5.35 kWh/m² falls in the middle.

	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)	5.1	5.1	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.2	5.3	5.3	5.3	5.3	5.3	5.4	5.4	5.4	5.4	5.5	5.5	5.5	5.5	5.5	5.5	5.6	5.6	5.6	5.6
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	5.1	Bright
2	5.1	Bright
3	5.2	Bright
4	5.2	Bright
5	5.2	Bright
6	5.2	Bright
7	5.2	Bright
8	5.2	Bright
9	5.2	Bright
10	5.2	Bright
11	5.2	Bright
12	5.2	Bright
13	5.3	Bright
14	5.3	Bright
15	5.3	Bright
16	5.3	Bright
17	5.3	Bright
18	5.4	Bright
19	5.4	Bright
20	5.4	Bright
21	5.4	Bright
22	5.5	Bright
23	5.5	Bright
24	5.5	Bright
25	5.5	Bright
26	5.5	Bright
27	5.5	Bright
28	5.6	Bright
29	5.6	Bright
30	5.6	Bright
31	5.6	Bright

Planning a trip in January

Hazard calendar for Kasulu

In seasonPeak

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

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

Kasulu's rainy season runs October–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 January a good time to visit Kasulu?

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

3.8

Sightseeing

11th-best month of the year

3.5

Beach & pool

11th-best month of the year

January is a weaker month for outdoor sightseeing in Kasulu.

What to pack for Kasulu in January

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

In January, Kasulu sees daytime highs around 25°C and nights near 17°C. Pack rain gear. Worth having: light clothes and sun protection. About 28 days see rain.

rain gearlight clothessun protection

UV index in Kasulu in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kasulu peaks around March 14 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 14 at about 8 (very high).

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)	10	15	16	15	12	10	11	8	13	14	13	12
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Extreme	Very high	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	10	Extreme
Feb	15	Extreme
Mar	16	Extreme
Apr	15	Extreme
May	12	Extreme
Jun	10	Very high
Jul	11	Extreme
Aug	8	Very high
Sep	13	Extreme
Oct	14	Extreme
Nov	13	Extreme
Dec	12	Extreme

Air quality in Kasulu 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 Kasulu is worst in July — around 47 µg/m³ PM2.5 (poor), about 3.3× the cleanest month (April, 14 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	20	20	17	14	18	35	47	43	36	23	17	16
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Poor	Poor	Poor	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	20	Moderate
Feb	20	Moderate
Mar	17	Moderate
Apr	14	Moderate
May	18	Moderate
Jun	35	Moderate
Jul	47	Poor
Aug	43	Poor
Sep	36	Poor
Oct	23	Moderate
Nov	17	Moderate
Dec	16	Moderate

Location & terrain

Where is Kasulu?

Kasulu sits at 4.6°S, 30.1°E, 1,310 m above sea level, in Tanzania. The nearest listed city is Mwandiga, 57 km away.

Topography around Kasulu

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

Within 3 km, the terrain around Kasulu has significant variations in elevation — a maximum elevation change of 288 m around an average of 1,320 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 629 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,720 m.

The land around Kasulu is covered by artificial surfaces (29%), cropland (27%) and trees (21%) within 3 km, grassland (49%) and cropland (28%) within 16 km, and grassland (35%), cropland (22%) and trees (21%) within 80 km.

3 km

288 m

artificial surfaces 29%

16 km

629 m

grassland 49%

80 km

1,720 m

grassland 35%

treesshrubsgrasslandcroplandartificial surfaceswaterwetland

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

January weather nearby: Mwandiga 57 km · Kigoma 62 km · Uvinza 67 km · Vyanda 76 km · Rumonge 100 km · Nguruka 120 km · Gitega 129 km · Kibondo 130 km

Tanzania travel facts

Travel advisory: Level 3; Reconsider Travel
Power plugs: Type D / G; 230 V · 50 Hz
Prices: ≈ 29% of US; price level, 2025
GDP per capita: $1,319; 2025
Happiness: 3.9 / 10; World Happiness, 2025
Safe drinking water: 31%; of population, 2024
Homicide rate: 3.7; per 100k, 2020
Road deaths: 31.1; per 100k/yr, 2019
Income group: Lower middle; World Bank
English: Low; EF EPI 479
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 Kasulu (-4.5767°, 30.1025°, elevation 1,310 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). 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).

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

	Clearer (%)	Cloudier (%)
1	12	88
2	11	89
3	11	89
4	11	89
5	11	89
6	11	89
7	11	89
8	11	89
9	11	89
10	11	89
11	10	90
12	10	90
13	11	89
14	11	89
15	11	89
16	11	89
17	11	89
18	12	88
19	13	87
20	13	87
21	14	86
22	14	86
23	14	86
24	14	86
25	14	86
26	15	85
27	15	85
28	16	84
29	16	84
30	16	84
31	17	83

	Rain chance (%)
1	93
2	92
3	92
4	92
5	92
6	92
7	92
8	92
9	92
10	92
11	92
12	92
13	92
14	92
15	92
16	92
17	91
18	91
19	91
20	91
21	91
22	90
23	90
24	90
25	90
26	90
27	90
28	90
29	90
30	90
31	90

	Humid (%)	Muggy (%)
1	81	19
2	81	19
3	81	19
4	81	19
5	81	19
6	81	19
7	81	19
8	81	19
9	81	19
10	81	19
11	81	19
12	81	19
13	81	19
14	81	19
15	81	19
16	80	20
17	80	20
18	79	21
19	79	21
20	79	21
21	78	22
22	78	22
23	77	23
24	76	24
25	76	24
26	75	25
27	75	25
28	74	26
29	73	27
30	73	27
31	72	28

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

	Clearer (%)	Cloudier (%)
1	12	88
2	11	89
3	11	89
4	11	89
5	11	89
6	11	89
7	11	89
8	11	89
9	11	89
10	11	89
11	10	90
12	10	90
13	11	89
14	11	89
15	11	89
16	11	89
17	11	89
18	12	88
19	13	87
20	13	87
21	14	86
22	14	86
23	14	86
24	14	86
25	14	86
26	15	85
27	15	85
28	16	84
29	16	84
30	16	84
31	17	83

	Rain chance (%)
1	93
2	92
3	92
4	92
5	92
6	92
7	92
8	92
9	92
10	92
11	92
12	92
13	92
14	92
15	92
16	92
17	91
18	91
19	91
20	91
21	91
22	90
23	90
24	90
25	90
26	90
27	90
28	90
29	90
30	90
31	90

	Humid (%)	Muggy (%)
1	81	19
2	81	19
3	81	19
4	81	19
5	81	19
6	81	19
7	81	19
8	81	19
9	81	19
10	81	19
11	81	19
12	81	19
13	81	19
14	81	19
15	81	19
16	80	20
17	80	20
18	79	21
19	79	21
20	79	21
21	78	22
22	78	22
23	77	23
24	76	24
25	76	24
26	75	25
27	75	25
28	74	26
29	73	27
30	73	27
31	72	28

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

	Clearer (%)	Cloudier (%)
1	12	88
2	11	89
3	11	89
4	11	89
5	11	89
6	11	89
7	11	89
8	11	89
9	11	89
10	11	89
11	10	90
12	10	90
13	11	89
14	11	89
15	11	89
16	11	89
17	11	89
18	12	88
19	13	87
20	13	87
21	14	86
22	14	86
23	14	86
24	14	86
25	14	86
26	15	85
27	15	85
28	16	84
29	16	84
30	16	84
31	17	83

	Rain chance (%)
1	93
2	92
3	92
4	92
5	92
6	92
7	92
8	92
9	92
10	92
11	92
12	92
13	92
14	92
15	92
16	92
17	91
18	91
19	91
20	91
21	91
22	90
23	90
24	90
25	90
26	90
27	90
28	90
29	90
30	90
31	90

	Humid (%)	Muggy (%)
1	81	19
2	81	19
3	81	19
4	81	19
5	81	19
6	81	19
7	81	19
8	81	19
9	81	19
10	81	19
11	81	19
12	81	19
13	81	19
14	81	19
15	81	19
16	80	20
17	80	20
18	79	21
19	79	21
20	79	21
21	78	22
22	78	22
23	77	23
24	76	24
25	76	24
26	75	25
27	75	25
28	74	26
29	73	27
30	73	27
31	72	28