Sunyani weather in May

In May, Sunyani sees average daytime highs of 32°C and overnight lows near 24°C, with 98 mm of rain across 18.3 wet days and about 12.3 hours of daylight. It is the 6th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 5% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 12 h 18 min at the start of May to 12 h 24 min by month's end. Set against the rest of the year, May is Sunyani's 8th-clearest and 6th-windiest month. For the whole year in context, see Sunyani's year-round climate.

Daytime high
32°
6th warmest
Overnight low
24°
9th coldest
Rainfall
98 mm
18.3 wet days
Daylight
12 h 18 min
5:56 AM – 6:16 PM
Cloud cover
77%
8th clearest
Wind
8 km/h
6th windiest
Solar energy
5.02 kWh/m²
Travel score
3.2
out of 10

Sunyani is Capital of Bono Region in Ghana.

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 32°C through the month.

A typical May day in Sunyani reaches about 32°C in the afternoon and slips back to 24°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 34°C. Set against its neighbours, May runs about 1°C cooler than April and about 2°C warmer than June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13224
23224
33224
43224
53224
63224
73224
83224
93224
103224
113224
123224
133224
143224
153224
163224
173224
183224
193224
203224
213224
223224
233224
243224
253123
263123
273123
283123
293123
303123
313123

How May really feels in Sunyani

Once humidity and wind are folded in, May averages 31 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
31
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.

Sunyani weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 22°15311.64.0
Feb35° / 24°35611.82.9
Mar34° / 24°8614.7122.6
Apr33° / 24°10016.512.22.8
May32° / 24°9818.312.33.2
Jun30° / 23°10219.212.43.7
Jul29° / 22°8316.412.44.5
Aug28° / 22°911712.24.5
Sep29° / 23°13222123.7
Oct30° / 22°11621.211.83.6
Nov31° / 22°5710.911.74.3
Dec32° / 22°183.411.64.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 5% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 78%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12278
22278
32278
42377
52377
62476
72476
82476
92476
102476
112476
122476
132476
142476
152476
162476
172476
182476
192476
202278
212278
222278
232179
242080
252080
261981
271882
281882
291882
301783
311783

Chance of precipitation in May

Any precipitation

Sunyani gets around 98 mm of rain over 18.3 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 59% and peaks near 62% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
160
260
360
460
559
659
759
859
958
1058
1158
1257
1357
1457
1557
1656
1756
1856
1956
2057
2157
2258
2358
2459
2559
2660
2760
2861
2961
3062
3162

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 96% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
10955
20955
30955
40955
50955
60955
70955
80955
90955
100955
110955
120955
130955
140955
150964
160964
170964
180964
190964
200964
210964
221954
231954
241954
251963
261963
271963
281963
291963
301972
311972

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 8 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
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 18 min at the start of May to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over May. Sunrise moves from 5:59 AM to 5:55 AM, and sunset from 6:14 PM to 6:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:596:14
212.35:596:14
312.35:586:14
412.35:586:14
512.35:586:14
612.35:576:14
712.35:576:15
812.35:576:15
912.35:576:15
1012.35:576:15
1112.35:566:15
1212.35:566:15
1312.35:566:15
1412.35:566:15
1512.35:566:15
1612.35:566:16
1712.35:556:16
1812.35:556:16
1912.35:556:16
2012.45:556:16
2112.45:556:16
2212.45:556:17
2312.45:556:17
2412.45:556:17
2512.45:556:17
2612.45:556:17
2712.45:556:18
2812.45:556:18
2912.45:556:18
3012.45:556:18
3112.45:556:18

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.02 kWh/m².

For context, solar energy here swings from a low near 3.74 kWh/m² to a high of 5.63 kWh/m² in February across the year — May's 5.02 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
224.9Bright
234.9Bright
244.9Bright
254.8Bright
264.8Bright
274.8Bright
284.7Bright
294.7Bright
304.7Bright
314.6Bright
Planning a trip in May

Hazard calendar for Sunyani

In seasonPeak

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

Sunyani sees seasonal dust haze (January–April), heaviest in February.

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

Is May a good time to visit Sunyani?

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

3.2
Sightseeing
9th-best month of the year
5.0
Beach & pool
9th-best month of the year

May is a weaker month for outdoor sightseeing in Sunyani.

What to pack for Sunyani in May

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

In May, Sunyani sees daytime highs around 32°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

UV index in Sunyani 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 Sunyani peaks around April 13 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highApr 13UV 13Jan 10UV 9
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar12Extreme
Apr13Extreme
May11Extreme
Jun11Extreme
Jul10Extreme
Aug12Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec9Very high

Air quality in Sunyani 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 Sunyani is worst in February — around 103 µg/m³ PM2.5 (unhealthy), about 6.0× the cleanest month (August, 17 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModerateUnhealthyFeb 9101 µg/m³Aug 1617 µg/m³
PM2.5 (µg/m³)Level
Jan97Unhealthy
Feb103Unhealthy
Mar45Poor
Apr39Poor
May23Moderate
Jun19Moderate
Jul18Moderate
Aug17Moderate
Sep18Moderate
Oct25Moderate
Nov34Moderate
Dec82Unhealthy
Location & terrain

Where is Sunyani?

Sunyani sits at 7.3°N, 2.3°W, 298 m above sea level, in Ghana. The nearest listed city is Nsoatre, 17 km away.

TepaBechemWankyiTechiman

Topography around Sunyani

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

Within 3 km, the terrain around Sunyani has only modest variations in elevation — a maximum elevation change of 93 m around an average of 294 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 221 m; within 80 km, large variations in elevation — a maximum elevation change of 738 m.

The land around Sunyani is covered by artificial surfaces (65%) within 3 km, trees (49%) and grassland (30%) within 16 km, and trees (71%) within 80 km.

3 km
93 m
16 km
221 m
80 km
738 m
treesshrubsgrasslandartificial surfaces
May weather nearby: Nsoatre 17 km · Atronie 22 km · Berekum 31 km · Duayaw-Nkwanta 31 km · Tepa 41 km · Bechem 43 km · Wankyi 51 km · Techiman 51 km

Ghana travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type D / G
230 V · 50 Hz
Prices
≈ 38% of US
price level, 2025
GDP per capita
$3,257
2025
Happiness
4.6 / 10
World Happiness, 2025
Safe drinking water
43%
of population, 2024
Homicide rate
1.8
per 100k, 2022
Road deaths
25.7
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Moderate
EF EPI 540
Religion
Christian 71%Muslim 20%other 5%traditionalist 3%

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 Sunyani (7.3399°, -2.3268°, elevation 298 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).