Tanga weather in May

In May, Tanga sees average daytime highs of 29°C and overnight lows near 23°C, with 165 mm of rain across 18.4 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 35% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 11 h 48 min at the start of May to 11 h 42 min by month's end. Set against the rest of the year, May is Tanga's 11th-clearest and 4th-windiest month. For the whole year in context, see Tanga's year-round climate.

Daytime high
29°
8th warmest
Overnight low
23°
6th coldest
Rainfall
165 mm
18.4 wet days
Daylight
11 h 48 min
6:27 AM – 6:13 PM
Cloud cover
57%
11th clearest
Wind
12 km/h
4th windiest
Solar energy
4.5 kWh/m²
Travel score
4.7
out of 10

Tanga is city in Tanzania.

Density
734/km²
people per km²
Founded
1891

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 29°C through the month.

A typical May day in Tanga reaches about 29°C in the afternoon and slips back to 23°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, May runs about 2°C cooler than April and on par with June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12924
22923
32923
42923
52923
62923
72923
82923
92923
102923
112923
122923
132923
142923
152923
162923
172923
182923
192923
202923
212923
222923
232922
242922
252822
262822
272822
282822
292822
302822
312822

How May really feels in Tanga

Once humidity and wind are folded in, May averages 8 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
8
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Tanga weather by month

How May compares with the rest of the year at a glance. May is the 8th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 25°318.112.33.9
Feb33° / 25°316.412.23.9
Mar32° / 25°8718.9123.1
Apr30° / 24°14823.311.93.3
May29° / 23°16518.411.84.7
Jun28° / 21°4411.711.75.9
Jul28° / 20°3511.211.76.3
Aug28° / 20°4012.911.86.0
Sep29° / 21°4013.5125.4
Oct30° / 22°8716.212.14.6
Nov30° / 23°8419.212.23.9
Dec32° / 24°6816.512.33.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 21% of May, with mostly cloudy or overcast conditions the remaining 45%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24555
34555
44654
54654
64654
74753
84753
94852
105050
115248
125248
135347
145446
155545
165644
175743
185842
195842
205941
216040
226139
236238
246238
256337
266436
276436
286535
296634
306535
316634

Chance of precipitation in May

Any precipitation

Tanga gets around 165 mm of rain over 18.4 wet days in May, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 58% and peaks near 73% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
173
272
372
471
570
670
769
868
966
1065
1164
1262
1361
1460
1559
1658
1757
1856
1955
2054
2153
2252
2351
2450
2549
2648
2747
2846
2945
3044
3143

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 84% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
105887
205896
306895
406895
506904
607894
707903
807903
908902
1008902
1109892
12010891
13010891
14011881
15011881
16012880
17012880
18013870
19014860
20015850
21016840
22017830
23018820
24020800
25021790
26022780
27124750
28125740
29127720
30129700
31131680

Wind in May

Winds average 12 km/h in May.

Across May, daily wind ranges from about 11 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
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 48 min at the start of May to 11 h 42 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 6:26 AM to 6:29 AM, and sunset from 6:16 PM to 6:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:266:16
211.86:266:15
311.86:266:15
411.86:266:15
511.86:266:15
611.86:266:14
711.86:266:14
811.86:266:14
911.86:266:14
1011.86:266:14
1111.86:266:14
1211.86:266:13
1311.86:266:13
1411.86:276:13
1511.86:276:13
1611.86:276:13
1711.86:276:13
1811.86:276:13
1911.86:276:13
2011.86:276:13
2111.86:276:13
2211.86:286:13
2311.76:286:13
2411.76:286:13
2511.76:286:13
2611.76:286:13
2711.76:286:13
2811.76:296:13
2911.76:296:13
3011.76:296:13
3111.76:296:13

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.5 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.5 kWh/m² to a high of 6.67 kWh/m² in February across the year — May's 4.5 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.6Bright
274.6Bright
284.7Bright
294.7Bright
304.7Bright
314.7Bright
Planning a trip in May

Hazard calendar for Tanga

In seasonPeak

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

Tanga sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Tanga's rainy season runs March–May, when most of the year's rain falls.

Cyclone
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Tanga?

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

4.7
Sightseeing
5th-best month of the year
5.8
Beach & pool
8th-best month of the year

May is a reasonable time to visit Tanga for sightseeing.

What to pack for Tanga in May

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

In May, Tanga sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

Sea temperature near Tanga in May

The nearest coast averages about 28°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in March at about 29°C and coldest in August near 26°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Warm
Feb28Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul26Warm
Aug26Warm
Sep26Warm
Oct27Warm
Nov28Warm
Dec28Tropical

UV index in Tanga 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 Tanga peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 17UV 15Jun 18UV 10
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Extreme
Aug10Extreme
Sep13Extreme
Oct13Extreme
Nov12Extreme
Dec12Extreme

Air quality in Tanga 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 Tanga is worst in January — around 20 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (October, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateGoodModerateJan 2220 µg/m³Oct 2310 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb20Moderate
Mar15Moderate
Apr11Good
May13Moderate
Jun16Moderate
Jul17Moderate
Aug15Moderate
Sep13Moderate
Oct10Good
Nov10Good
Dec16Moderate
Location & terrain

Where is Tanga?

Tanga sits at 5.1°S, 39.1°E, 22 m above sea level, in Tanzania. The nearest listed city is Mlalo, 24 km away.

MkoaniWeteNungwiChake Chake

Topography around Tanga

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

Within 3 km, the terrain around Tanga has only modest variations in elevation — a maximum elevation change of 47 m around an average of 13 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 133 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,025 m.

The land around Tanga is covered by artificial surfaces (35%), water (24%) and trees (20%) within 3 km, water (40%) and trees (25%) within 16 km, and water (43%) and trees (32%) within 80 km.

3 km
47 m
16 km
133 m
80 km
2,025 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
May weather nearby: Mlalo 24 km · Muheza 37 km · Maramba 53 km · Korogwe 69 km · Mkoani 69 km · Wete 70 km · Nungwi 76 km · Chake Chake 77 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 Tanga (-5.0689°, 39.0988°, elevation 22 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).