Njombe weather in May

In May, Njombe sees average daytime highs of 21°C and overnight lows near 12°C, with 18 mm of rain across 5.4 wet days and about 11.6 hours of daylight. It is the 9th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 21°C through the month. The sky is clear or mostly clear about 21% of the time in May, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of May to 11 h 30 min by month's end. Set against the rest of the year, May is Njombe's 6th-clearest and 5th-windiest month. For the whole year in context, see Njombe's year-round climate.

Daytime high
21°
9th warmest
Overnight low
12°
5th coldest
Rainfall
18 mm
5.4 wet days
Daylight
11 h 36 min
6:50 AM – 6:24 PM
Cloud cover
58%
6th clearest
Wind
12 km/h
5th windiest
Solar energy
4.82 kWh/m²
Travel score
7.1
out of 10

Njombe is town in Njombe Region, Tanzania.

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 21°C through the month.

A typical May day in Njombe reaches about 21°C in the afternoon and slips back to 12°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 23°C. Set against its neighbours, May runs on par with April and about 1°C warmer than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12114
22113
32113
42113
52113
62113
72113
82113
92113
102113
112113
122113
132113
142112
152112
162112
172112
182112
192112
202112
212112
222112
232112
242112
252112
262112
272112
282111
292011
302011
312011

Njombe weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 7th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 27% of May, with mostly cloudy or overcast conditions the remaining 52%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24060
34060
44258
54258
64258
74258
84456
94555
104456
114654
124654
134654
144753
154654
164753
174753
184753
194852
204852
214951
225050
235149
245248
255347
265347
275446
285545
295644
305743
315842

Chance of precipitation in May

Any precipitation

Njombe gets around 18 mm of rain over 5.4 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 18% and peaks near 33% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
133
232
331
430
529
628
727
826
924
1023
1122
1221
1320
1419
1518
1617
1716
1815
1914
2013
2112
2212
2311
2410
259
268
278
287
296
306
315

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 66% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
134642
236631
339601
441581
543561
646531
748511
851481
953461
1056440
1159410
1261390
1363370
1465350
1567330
1669310
1771290
1872280
1973270
2075250
2176240
2277230
2379210
2480200
2581190
2683170
2784160
2885150
2987130
3088120
3190100

Wind in May

Winds average 12 km/h in May.

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

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 42 min at the start of May to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over May. Sunrise moves from 6:48 AM to 6:53 AM, and sunset from 6:28 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:486:28
211.76:486:28
311.76:486:28
411.76:486:27
511.66:486:27
611.66:486:27
711.66:496:26
811.66:496:26
911.66:496:26
1011.66:496:26
1111.66:496:25
1211.66:496:25
1311.66:496:25
1411.66:506:25
1511.66:506:25
1611.66:506:24
1711.66:506:24
1811.66:506:24
1911.66:516:24
2011.66:516:24
2111.56:516:24
2211.56:516:24
2311.56:516:24
2411.56:526:23
2511.56:526:23
2611.56:526:23
2711.56:526:23
2811.56:536:23
2911.56:536:23
3011.56:536:23
3111.56:536:23

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.82 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 — May's 4.82 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
194.9Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in May

Hazard calendar for Njombe

In seasonPeak

None of Njombe's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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 May a good time to visit Njombe?

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

7.1
Sightseeing
6th-best month of the year
4.2
Beach & pool
5th-best month of the year

May is one of the better times to visit Njombe for general sightseeing.

What to pack for Njombe in May

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

In May, Njombe sees daytime highs around 21°C and nights near 12°C. Worth packing: sun protection. About 5 days see rain.

sun protection

UV index in Njombe in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 11 (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 May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May 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
May 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).