Kasamwa weather in May

In May, Kasamwa sees average daytime highs of 28°C and overnight lows near 19°C, with 47 mm of rain across 8.4 wet days and about 11.9 hours of daylight. It is the 7th-warmest and 9th-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 27% of the time in May, and the air most often feels humid.

Daylight stretches from about 11 h 54 min at the start of May to 11 h 48 min by month's end. Set against the rest of the year, May is Kasamwa's 5th-clearest and 5th-windiest month. For the whole year in context, see Kasamwa's year-round climate.

Daytime high
28°
7th warmest
Overnight low
19°
12th coldest
Rainfall
47 mm
8.4 wet days
Daylight
11 h 54 min
6:50 AM – 6:43 PM
Cloud cover
62%
5th clearest
Wind
8 km/h
5th windiest
Solar energy
5.73 kWh/m²
Travel score
6.4
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

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

A typical May day in Kasamwa reaches about 28°C in the afternoon and slips back to 19°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 30°C. Set against its neighbours, May runs on par with April and on par with June.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12719
22719
32719
42719
52719
62719
72719
82719
92719
102719
112819
122819
132819
142819
152819
162819
172819
182819
192819
202819
212819
222819
232818
242818
252818
262818
272818
282818
292818
302818
312818

Kasamwa weather by month

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

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 55%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
23070
33070
43169
53268
63466
73466
83664
93763
103862
114060
124258
134357
144555
154555
164852
174951
184951
195050
205149
215248
225347
235446
245545
255545
265644
275842
285842
295941
305941
315941

Chance of precipitation in May

Any precipitation

Kasamwa gets around 47 mm of rain over 8.4 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 27% and peaks near 46% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
146
245
344
443
541
640
739
838
936
1034
1133
1231
1329
1427
1526
1625
1723
1822
1921
2020
2119
2218
2317
2416
2515
2614
2714
2814
2913
3013
3114

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the humid band about 42% of days. Sticky, muggy-or-worse air turns up on roughly 17% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11155133
21155232
31165231
41175230
51185328
61195327
71215226
81225225
91235224
102255122
112275021
122294920
133314818
143334617
154354516
165374415
176394214
187404112
198413912
209433811
2110443610
221244359
231345338
241545328
251745307
261845297
272045297
282244286
292443286
302541276
312740276

Wind in May

Winds average 8 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 54 min at the start of May to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over May. Sunrise moves from 6:50 AM to 6:52 AM, and sunset from 6:45 PM to 6:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:506:45
211.96:506:44
311.96:506:44
411.96:506:44
511.96:506:44
611.96:506:44
711.96:506:43
811.96:506:43
911.96:506:43
1011.96:506:43
1111.96:506:43
1211.96:506:43
1311.96:506:43
1411.96:506:43
1511.96:506:43
1611.96:506:43
1711.96:506:43
1811.96:516:43
1911.96:516:43
2011.96:516:43
2111.96:516:43
2211.96:516:43
2311.96:516:43
2411.96:516:43
2511.96:516:43
2611.96:516:43
2711.96:526:43
2811.96:526:43
2911.96:526:43
3011.86:526:43
3111.86:526:43

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.73 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 — May's 5.73 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.6Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
315.8Bright
Planning a trip in May

Hazard calendar for Kasamwa

In seasonPeak

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

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 May a good time to visit Kasamwa?

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

6.4
Sightseeing
3rd-best month of the year
7.0
Beach & pool
4th-best month of the year

May is a reasonable time to visit Kasamwa for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Kasamwa in May

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

In May, Kasamwa sees daytime highs around 28°C and nights near 19°C. Pack light clothes. Worth having: rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

UV index in Kasamwa in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 12 (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 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 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
May 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).