Kasamwa weather in January

In January, Kasamwa sees average daytime highs of 27°C and overnight lows near 18°C, with 125 mm of rain across 20.9 wet days and about 12.1 hours of daylight. It is the 10th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 15% of the time in January, and the air most often feels humid.

Daylight stretches from about 12 h 12 min at the start of January to 12 h 06 min by month's end. Set against the rest of the year, January is Kasamwa's 7th-clearest and 11th-windiest month. For the whole year in context, see Kasamwa's year-round climate.

Daytime high
27°
10th warmest
Overnight low
18°
3rd coldest
Rainfall
125 mm
20.9 wet days
Daylight
12 h 06 min
6:55 AM – 7:04 PM
Cloud cover
70%
7th clearest
Wind
6 km/h
11th windiest
Solar energy
5.85 kWh/m²
Travel score
4.8
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical January day in Kasamwa reaches about 27°C in the afternoon and slips back to 18°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 29°C. Set against its neighbours, January runs on par with December and about 1°C cooler than February.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12718
22718
32718
42718
52718
62718
72718
82718
92718
102718
112718
122718
132718
142718
152718
162718
172718
182718
192718
202718
212718
222718
232718
242718
252718
262718
272718
282718
292718
302718
312818

Kasamwa weather by month

How January compares with the rest of the year at a glance. January is the 10th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 18°12520.912.14.8
Feb28° / 18°9215.412.15.0
Mar28° / 18°12918.8124.8
Apr27° / 18°13317.911.95.0
May28° / 19°478.411.96.4
Jun28° / 18°193.311.86.6
Jul29° / 18°81.411.96.8
Aug29° / 18°365.611.96.1
Sep29° / 18°6811125.5
Oct28° / 18°13719.512.14.8
Nov26° / 18°18824.112.14.2
Dec26° / 18°17123.712.24.5

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 18% of January, with mostly cloudy or overcast conditions the remaining 67%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13565
23565
33565
43565
53565
63565
73367
83466
93466
103268
113268
123268
133169
143169
153169
163169
173070
183070
193169
203169
213268
223268
233367
243367
253367
263466
273565
283565
293664
303664
313763

Chance of precipitation in January

Any precipitation

Kasamwa gets around 125 mm of rain over 20.9 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 67% and peaks near 72% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
172
272
372
471
571
671
771
870
970
1070
1169
1269
1368
1468
1568
1667
1767
1866
1966
2065
2165
2265
2364
2464
2564
2663
2762
2862
2961
3060
3159

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 66% of days. Sticky, muggy-or-worse air turns up on roughly 32% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)
126335
226335
326335
426335
526335
626335
726434
816534
916633
1016633
1116732
1216732
1316831
1416831
1516831
1616831
1716831
1826731
1926830
2026830
2126830
2236730
2336730
2436730
2536730
2646630
2746630
2846630
2956530
3056530
3156530

Wind in January

Winds average 6 km/h in January.

Across January, daily wind ranges from about 6 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
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 12 h 12 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 shrink by about 6 minutes over January. Sunrise moves from 6:49 AM to 7:00 AM, and sunset from 6:58 PM to 7:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:496:58
212.26:496:59
312.26:496:59
412.26:507:00
512.26:507:00
612.26:517:00
712.26:517:01
812.26:527:01
912.26:527:02
1012.26:537:02
1112.26:537:02
1212.26:537:03
1312.26:547:03
1412.26:547:03
1512.16:557:04
1612.16:557:04
1712.16:557:04
1812.16:567:05
1912.16:567:05
2012.16:577:05
2112.16:577:05
2212.16:577:06
2312.16:587:06
2412.16:587:06
2512.16:587:06
2612.16:597:07
2712.16:597:07
2812.16:597:07
2912.16:597:07
3012.17:007:07
3112.17:007:07

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.85 kWh/m².

For context, solar energy here swings from a low near 5.38 kWh/m² to a high of 6.27 kWh/m² in February across the year — January's 5.85 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
246.0Bright
256.0Bright
266.0Intense
276.0Intense
286.0Intense
296.1Intense
306.1Intense
316.1Intense
Planning a trip in January

Hazard calendar for Kasamwa

In seasonPeak

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

Kasamwa's rainy season runs October–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 Kasamwa?

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

4.8
Sightseeing
8th-best month of the year
4.9
Beach & pool
10th-best month of the year

January is a reasonable time to visit Kasamwa for sightseeing.

What to pack for Kasamwa in January

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

In January, Kasamwa sees daytime highs around 27°C and nights near 18°C. Pack rain gear. Worth having: light clothes and sun protection. About 21 days see rain.

rain gearlight clothessun protection

UV index in Kasamwa 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 Kasamwa peaks around March 15 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 15UV 16Jun 18UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar16Extreme
Apr15Extreme
May12Extreme
Jun10Extreme
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec11Extreme

Air quality in Kasamwa 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 Kasamwa is worst in January — around 23 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (October, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJan 1922 µg/m³Oct 1814 µg/m³
PM2.5 (µg/m³)Level
Jan23Moderate
Feb21Moderate
Mar17Moderate
Apr15Moderate
May15Moderate
Jun15Moderate
Jul15Moderate
Aug17Moderate
Sep17Moderate
Oct14Moderate
Nov16Moderate
Dec18Moderate
Location & terrain

Where is Kasamwa?

Kasamwa sits at 2.9°S, 32.4°E, 1,199 m above sea level, in Tanzania. The nearest listed city is Geita, 22 km away.

Topography around Kasamwa

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

Within 3 km, the terrain around Kasamwa has only modest variations in elevation — a maximum elevation change of 148 m around an average of 1,211 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 370 m; within 80 km, large variations in elevation — a maximum elevation change of 670 m.

The land around Kasamwa is covered by cropland (60%) within 3 km, cropland (55%) and shrubs (22%) within 16 km, and cropland (54%) and water (20%) within 80 km.

3 km
148 m
16 km
370 m
80 km
670 m
treesshrubsgrasslandcroplandartificial surfaceswater
January weather nearby: Geita 22 km · Sengerema 32 km · Mhalamba 56 km · Katoro 58 km · Mwanza 64 km · Buseresere 65 km · Usagara 66 km · Mhango 67 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
Christian 63%Muslim 34%folk religion 1%

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 Kasamwa (-2.85°, 32.4333°, elevation 1,199 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. 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).