Njombe weather in January

In January, Njombe sees average daytime highs of 23°C and overnight lows near 15°C, with 268 mm of rain across 26.5 wet days and about 12.5 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 4% of the time in January, and the air most often feels comfortable.

Daylight stretches from about 12 h 30 min at the start of January to 12 h 24 min by month's end. Set against the rest of the year, January is Njombe's 12th-clearest and 11th-windiest month. For the whole year in context, see Njombe's year-round climate.

Daytime high
23°
5th warmest
Overnight low
15°
12th coldest
Rainfall
268 mm
26.5 wet days
Daylight
12 h 30 min
6:35 AM – 7:05 PM
Cloud cover
85%
12th clearest
Wind
6 km/h
11th windiest
Solar energy
5.12 kWh/m²
Travel score
4.1
out of 10

Njombe is town in Njombe Region, Tanzania.

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 23°C through the month.

A typical January day in Njombe reaches about 23°C in the afternoon and slips back to 15°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 24°C. Set against its neighbours, January runs on par with December and on par with February.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12315
22315
32315
42315
52315
62315
72315
82315
92315
102315
112315
122315
132315
142315
152315
162315
172315
182315
192315
202315
212315
222315
232315
242315
252315
262315
272315
282315
292315
302315
312315

Njombe weather by month

How January compares with the rest of the year at a glance. January is the 5th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 15°26826.512.54.1
Feb23° / 15°26023.612.34.1
Mar22° / 15°22827.212.14.0
Apr21° / 14°8318.611.85.1
May21° / 12°185.411.67.1
Jun20° / 10°30.811.57.7
Jul19° / 20.411.57.7
Aug20° / 10°40.911.77.9
Sep22° / 11°40.911.98.3
Oct24° / 13°185.512.27.8
Nov24° / 14°5410.512.46.8
Dec23° / 15°17120.812.55.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 7% of January, with mostly cloudy or overcast conditions the remaining 88%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11882
21783
31585
41585
51486
61387
71387
81189
91189
101189
111090
121090
131090
141090
151090
161090
171189
181189
191189
201189
211189
221189
231189
241288
251288
261288
271288
281288
291189
301189
311189

Chance of precipitation in January

Any precipitation

Njombe gets around 268 mm of rain over 26.5 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 85% and peaks near 87% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
178
279
379
480
581
682
783
884
985
1085
1186
1286
1386
1487
1587
1687
1787
1886
1986
2086
2186
2286
2386
2486
2586
2686
2786
2886
2986
3086
3186

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the comfortable band about 79% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
187913
287913
377914
477914
567915
667915
757916
857817
957817
1047818
1147818
1247818
1337819
1437819
1537819
1637819
1737819
1827919
1927919
2027919
2128018
2228018
2328018
2428018
2527919
2627919
2727919
2827919
2927820
3027820
3127721

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 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
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 30 min at the start of January to 12 h 24 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 6:28 AM to 6:42 AM, and sunset from 7:00 PM to 7:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.56:287:00
212.56:287:01
312.56:297:01
412.56:297:01
512.56:307:02
612.56:317:02
712.56:317:02
812.56:327:03
912.56:327:03
1012.56:337:03
1112.56:337:04
1212.56:347:04
1312.56:347:04
1412.56:357:04
1512.56:357:05
1612.56:357:05
1712.56:367:05
1812.56:367:05
1912.56:377:06
2012.56:377:06
2112.56:387:06
2212.56:387:06
2312.56:397:06
2412.56:397:06
2512.46:407:06
2612.46:407:06
2712.46:407:06
2812.46:417:07
2912.46:417:07
3012.46:427:07
3112.46:427:07

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.12 kWh/m².

For context, solar energy here swings from a low near 4.73 kWh/m² to a high of 6.65 kWh/m² in October across the year — January's 5.12 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
315.2Bright
Planning a trip in January

Hazard calendar for Njombe

In seasonPeak

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

Njombe's monsoon runs December–March, when most of the year's rain falls.

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

Is January a good time to visit Njombe?

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

4.1
Sightseeing
10th-best month of the year
3.2
Beach & pool
11th-best month of the year

January is a reasonable time to visit Njombe for sightseeing.

What to pack for Njombe in January

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

In January, Njombe sees daytime highs around 23°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 27 days see rain.

rain gearlight clothessun protection

UV index in Njombe in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 16 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Njombe peaks around February 22 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 15 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 22UV 16Jun 15UV 10
UV index (midday)Level
Jan16Extreme
Feb16Extreme
Mar16Extreme
Apr15Extreme
May11Extreme
Jun10Extreme
Jul11Extreme
Aug12Extreme
Sep13Extreme
Oct15Extreme
Nov14Extreme
Dec14Extreme

Air quality in Njombe 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 Njombe is worst in October — around 21 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (May, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodOct 1620 µg/m³May 157 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar10Good
Apr8Good
May7Good
Jun8Good
Jul11Good
Aug14Moderate
Sep17Moderate
Oct21Moderate
Nov17Moderate
Dec10Good
Location & terrain

Where is Njombe?

Njombe sits at 9.3°S, 34.8°E, 1,960 m above sea level, in Tanzania. The nearest listed city is Mtwango, 37 km away.

RujewaMahanjeUrundaIpinda

Topography around Njombe

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

Within 3 km, the terrain around Njombe has only modest variations in elevation — a maximum elevation change of 221 m around an average of 1,902 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 563 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,440 m.

The land around Njombe is covered by artificial surfaces (31%) and cropland (24%) within 3 km, trees (30%), grassland (28%) and shrubs (21%) within 16 km, and shrubs (32%), trees (31%) and grassland (20%) within 80 km.

3 km
221 m
16 km
563 m
80 km
2,440 m
treesshrubsgrasslandcroplandartificial surfaceswater
January weather nearby: Mtwango 37 km · Ilembula 54 km · Mlangali 56 km · Makumbako 56 km · Rujewa 84 km · Mahanje 89 km · Urunda 93 km · Ipinda 97 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 Njombe (-9.3492°, 34.7717°, elevation 1,960 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).