Hedaru weather in May

In May, Hedaru sees average daytime highs of 25°C and overnight lows near 18°C, with 124 mm of rain across 15.2 wet days and about 11.8 hours of daylight. It is the 9th-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 7% of the time in May, and the air most often feels humid.

Daylight stretches from about 11 h 48 min at the start of May to 11 h 48 min by month's end. Set against the rest of the year, May is Hedaru's 10th-clearest and 4th-windiest month. For the whole year in context, see Hedaru's year-round climate.

Daytime high
25°
9th warmest
Overnight low
18°
6th coldest
Rainfall
124 mm
15.2 wet days
Daylight
11 h 48 min
6:31 AM – 6:19 PM
Cloud cover
69%
10th clearest
Wind
7 km/h
4th windiest
Solar energy
4.19 kWh/m²
Travel score
5.9
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical May day in Hedaru reaches about 25°C in the afternoon and slips back to 18°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, May runs about 2°C cooler than April and on par with June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12619
22619
32619
42619
52619
62619
72619
82618
92618
102518
112518
122518
132518
142518
152518
162518
172518
182518
192518
202518
212517
222517
232517
242517
252517
262517
272517
282517
292517
302517
312517

Hedaru weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 19°549.612.25.3
Feb30° / 20°488.212.14.9
Mar30° / 20°10216.3124.4
Apr27° / 20°18222.511.94.4
May25° / 18°12415.211.85.9
Jun25° / 16°17411.77.5
Jul24° / 15°112.511.87.8
Aug25° / 15°142.911.97.6
Sep27° / 16°143.2127.4
Oct28° / 18°638.712.16.3
Nov28° / 19°9014.312.25.2
Dec29° / 20°7914.912.35.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 30% of May, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13169
23169
33169
43169
53268
63268
73367
83565
93565
103565
113664
123664
133664
143664
153763
163763
173763
183862
193961
204060
214060
224159
234159
244159
254258
264258
274456
284456
294456
304456
314456

Chance of precipitation in May

Any precipitation

Hedaru gets around 124 mm of rain over 15.2 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 48% and peaks near 67% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
167
266
365
465
564
663
762
860
959
1057
1156
1254
1353
1451
1550
1649
1747
1846
1944
2043
2141
2240
2338
2437
2536
2634
2733
2831
2930
3028
3126

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 54% of days. Sticky, muggy-or-worse air turns up on roughly 38% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1022969
2023068
3033265
4033364
5033562
6033760
7043957
8044155
9044353
10044650
11054847
12055045
13055342
14055540
15055738
16055936
17056134
18066232
19066430
20076528
21076726
22086725
23096823
240106822
250116821
261136719
271146718
281166617
291176715
301196614
312216512

Wind in May

Winds average 7 km/h in May.

Across May, daily wind ranges from about 7 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
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 48 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 grow by about 0 minutes over May. Sunrise moves from 6:30 AM to 6:33 AM, and sunset from 6:21 PM to 6:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:306:21
211.86:306:21
311.86:306:20
411.86:306:20
511.86:306:20
611.86:306:20
711.86:306:20
811.86:306:19
911.86:306:19
1011.86:306:19
1111.86:306:19
1211.86:306:19
1311.86:316:19
1411.86:316:19
1511.86:316:19
1611.86:316:19
1711.86:316:18
1811.86:316:18
1911.86:316:18
2011.86:316:18
2111.86:316:18
2211.86:316:18
2311.86:326:18
2411.86:326:18
2511.86:326:18
2611.86:326:18
2711.86:326:18
2811.86:326:18
2911.86:336:18
3011.86:336:19
3111.86:336:19

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.19 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.19 kWh/m² to a high of 6.55 kWh/m² in February across the year — May's 4.19 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.2Bright
44.2Bright
54.2Bright
64.2Bright
74.2Bright
84.2Bright
94.2Bright
104.2Bright
114.2Bright
124.2Bright
134.2Bright
144.2Bright
154.2Bright
164.2Bright
174.2Bright
184.2Bright
194.2Bright
204.2Bright
214.2Bright
224.2Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.4Bright
304.4Bright
314.4Bright
Planning a trip in May

Hazard calendar for Hedaru

In seasonPeak

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

Hedaru's rainy season runs March–May, 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 Hedaru?

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

5.9
Sightseeing
6th-best month of the year
5.4
Beach & pool
11th-best month of the year

May is a reasonable time to visit Hedaru for sightseeing.

What to pack for Hedaru in May

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

In May, Hedaru sees daytime highs around 25°C and nights near 18°C. Pack rain gear. Worth having: light clothes. About 15 days see rain.

rain gearlight clothes

UV index in Hedaru 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 Hedaru peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 15Jun 19UV 10
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr15Extreme
May12Extreme
Jun10Extreme
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec13Extreme

Air quality in Hedaru 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 Hedaru is worst in July — around 16 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (October, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodJul 1616 µg/m³Oct 219 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb14Moderate
Mar11Good
Apr10Good
May11Good
Jun14Moderate
Jul16Moderate
Aug13Moderate
Sep11Good
Oct9Good
Nov9Good
Dec13Moderate
Location & terrain

Where is Hedaru?

Hedaru sits at 4.5°S, 37.9°E, 640 m above sea level, in Tanzania. The nearest listed city is Makuyuni, 34 km away.

LembeniUsangiKorogwe

Topography around Hedaru

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

Within 3 km, the terrain around Hedaru has significant variations in elevation — a maximum elevation change of 416 m around an average of 662 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,658 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,131 m.

The land around Hedaru is covered by cropland (37%) and grassland (32%) within 3 km, shrubs (61%) within 16 km, and shrubs (68%) within 80 km.

3 km
416 m
16 km
1,658 m
80 km
2,131 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Makuyuni 34 km · Mazinde 48 km · Matui 51 km · Same 52 km · Lushoto 53 km · Lembeni 86 km · Usangi 93 km · Korogwe 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 Hedaru (-4.5°, 37.9°, elevation 640 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).