Climate and average weather in Foso

In Foso, the weather is muggy, hot, wet, and partly cloudy and remarkably steady, with daytime highs holding near hot levels all year. The wettest stretch peaks around June.

Best: mid July to late August

Over the course of the year, the temperature in Foso typically varies from 22°C to 33°C, and is rarely below 19°C or above 35°C. February is the hottest month of the year, while August is the coldest.

Based on the travel score, the best times of year to visit Foso for warm-weather activities are from mid July to late August and late November to late December.

Hottest
Feb
33°
Coldest
Aug
22°
Wettest
Jun
225 mm
Driest
Jan
37 mm
Rain / yr
1556 mm
251 wet days
Daylight
11.7–12.3 h
shortest–longest
Elevation
148 m
5.7°N
Clearest
Jan
53% cloud

Foso is town and Municipal Capital in Central Region, Ghana.

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

Foso weather by month, at a glance

The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.

Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around mid July to late August.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Foso, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

Temperatures in Foso stay fairly even through the year, without a distinct hot or cool season. The warmest month is February, with an average high of 33°C and low of 24°C; the coolest is August, with an average low of 22°C and high of 28°C.

Days typically run about 8°C warmer than nights, with the widest day–night swing (around 10°C) in January.

15°20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3222
Feb3324
Mar3324
Apr3224
May3123
Jun2923
Jul2822
Aug2822
Sep2923
Oct3023
Nov3123
Dec3123

How hot and cold Foso really feels

Feels-like highFeels-like lowactual air temp

The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.

On the hottest afternoons, once humidity is folded in, Foso feels like about 38°C (around March 2). About 290 days a year carry some heat stress, peaking in March.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDecdangerous heat
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan35322222
Feb38332424
Mar38332424
Apr38322424
May36312323
Jun33292323
Jul31282222
Aug31282222
Sep32292323
Oct34302323
Nov35312323
Dec35312223

Average hourly temperature in Foso

A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on February afternoons, near 33°C, and coldest before dawn in August, near 22°C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Foso weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 22°379.311.74.2
Feb33° / 24°6012.611.83.2
Mar33° / 24°12021.3122.7
Apr32° / 24°14122.812.12.7
May31° / 23°20827.212.32.7
Jun29° / 23°22527.112.33.1
Jul28° / 22°14823.912.33.9
Aug28° / 22°10621.912.24.1
Sep29° / 23°16726.2123.2
Oct30° / 23°19227.711.92.9
Nov31° / 23°10720.411.73.4
Dec31° / 23°4510.911.74.4

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Foso gets about 1556 mm of precipitation a year. On a typical day the chance of rain is very wet, but that rises and falls sharply with the seasons.

The wetter season lasts 4.6 months, from around Mar 11 to Jul 28, peaking in June at about 93% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Dec 30.

June is the wettest month by volume, with 225 mm over about 27 wet days; January is the driest, with 37 mm.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecdrierwetterdriermostly drysome rainoften wetvery wetJun 7 · 93%Dec 30 · 24%
Rain on a day (%)Rain days
Jan309
Feb4613
Mar6921
Apr7523
May8827
Jun9027
Jul7724
Aug7222
Sep8726
Oct8828
Nov6820
Dec3611

Monthly rainfall

Over a full year, Foso collects about 1556 mm of rain across 251 wet days — roughly 130 mm in an average month.

It doesn’t fall evenly. June is the wettest month with 225 mm, while January is the driest at just 37 mm. The three wettest months alone bring about 40% of the year’s total.

050100150200250JanFebMarAprMayJunJulAugSepOctNovDec376012014120822514810616719210745
Rainfall (mm)Rain days
Jan379
Feb6013
Mar12021
Apr14123
May20827
Jun22527
Jul14824
Aug10622
Sep16726
Oct19228
Nov10720
Dec4511

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Foso, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.

The clearer part of the year begins around October 25 and lasts for 4.5 months, ending around March 10. The clearest month is December, when the sky is clear, mostly clear, or partly cloudy 60% of the time on average.

The cloudier part of the year begins around March 11 and lasts for 7.5 months, ending around October 24. The cloudiest month is August, when it is overcast or mostly cloudy 96% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecDec 27 · 68%Aug 19 · 4%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan5743
Feb4555
Mar2575
Apr2179
May1684
Jun1090
Jul694
Aug496
Sep991
Oct2377
Nov4258
Dec6040

Daylight, sunrise and sunset

DaylightNight

Hours of daylight through the year, with sunrise and sunset times.

The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. Close to the equator, Foso barely changes through the year: days stay near 12 h 18 min of light in every season.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan11.76:236:06
Feb11.86:256:14
Mar12.06:166:14
Apr12.16:026:09
May12.35:546:09
Jun12.35:566:15
Jul12.36:026:20
Aug12.26:046:15
Sep12.05:596:00
Oct11.95:545:46
Nov11.75:585:42
Dec11.76:115:51

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Foso averages about 3 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 13 days.

The sunnier stretch runs 3.8 months, from around Nov 10 to Mar 5. The sunniest month is December, with roughly 9 sunny days (mixed).

The greyest month is June, down near 0 sunny days — about 98% fewer than the December peak.

051015JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedDec 2913 daysJun 80 days
Sunny daysSky
Jan11Mixed
Feb7Gloomy
Mar2Gloomy
Apr1Gloomy
May1Gloomy
Jun0Gloomy
Jul0Gloomy
Aug0Gloomy
Sep0Gloomy
Oct1Gloomy
Nov4Gloomy
Dec10Mixed

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.

Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.

Foso is humid all year round — on a typical day the air feels at least humid, and there is no real dry season to wait for.

The stickiest month is February, when it feels muggy, oppressive or miserable about 98% of the time. Even in January, the mildest month, the air is dry or comfortable only 5% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecmiserableoppressivemuggy
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan13517678
Feb01267121
Mar00016534
Apr00005248
May00006040
Jun0001909
Jul00012880
Aug00019810
Sep0003970
Oct0000973
Nov00008614
Dec00197515

Wind

Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.

This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.

Across the year, average wind speed in Foso is typically calm, near 7 km/h, and varies little with the seasons.

The windier part of the year lasts 3.4 months, from around Jun 13 to Sep 24. The windiest month is August, averaging about 8 km/h (calm).

The calmer part of the year runs from around Sep 25 to Feb 5, with November the calmest month at about 5 km/h.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmercalmlight breezeAug 5 · 8 km/hNov 6 · 5 km/h
Wind speed (km/h)Feels
Jan6calm
Feb7calm
Mar7calm
Apr7calm
May6calm
Jun7calm
Jul8calm
Aug8calm
Sep7calm
Oct6calm
Nov5calm
Dec5calm

Hazard calendar for Foso

In seasonPeak

When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.

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

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

Best time to visit Foso

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Foso throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around mid August, Foso is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.

Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.

The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best times of year to visit Foso for general outdoor tourist activities run from mid July to late August and again from late November to late January, with a peak score in the last week of December.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebest timetravel scoretemperaturecloudsprecipitationDec 27 · 4.7

The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Travel score (0–10)Rating
Jan4.2fair
Feb3.2poor
Mar2.7poor
Apr2.7poor
May2.7poor
Jun3.1poor
Jul3.9fair
Aug4.1fair
Sep3.3poor
Oct2.9poor
Nov3.4poor
Dec4.4fair

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Foso for hot-weather activities is from early December to mid February, with a peak score in the last week of December.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationDec 29 · 7.1

The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

What to pack for Foso, by month

EssentialRecommendedOptional

Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.

Foso packs about the same all year — highs hold near 33°C. Across the year the things worth having are light clothes, rain gear and sun protection.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In February, Foso sees daytime highs around 33°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 13 days see rain.

Sea temperature near Foso

Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.

The sea at the nearest coast (about 65 km away) is warmest in May at about 28°C and coldest in August near 23°C.

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

22°24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb28Warm
Mar28Tropical
Apr28Tropical
May28Tropical
Jun27Warm
Jul24Warm
Aug23Refreshing
Sep24Warm
Oct26Warm
Nov28Tropical
Dec28Warm

UV index (midday) in Foso by month

LowModerateHighVery highExtreme

Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.

Under clear skies, the midday UV index in Foso peaks around March 23 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 23UV 13Dec 17UV 9
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar13Extreme
Apr13Extreme
May11Extreme
Jun11Extreme
Jul10Extreme
Aug11Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec9Very high

Average hourly UV index in Foso

LowModerateHighVery highExtreme

Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.

The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

UV falls off far faster than brightness as the sun drops, so even in March the burn window is concentrated in the middle of the day: about 8 hours a day reach index 3 (protection recommended), and 6.5 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan7.55
Feb7.55.5
Mar86.5
Apr86
May86
Jun85.5
Jul7.55.5
Aug7.55.5
Sep86
Oct7.55.5
Nov75
Dec74.5

Air quality in Foso by month

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.

Air quality in Foso is worst in January — around 79 µg/m³ PM2.5 (unhealthy), about 4.4× the cleanest month (August, 18 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModerateUnhealthyJan 1878 µg/m³Aug 2318 µg/m³
PM2.5 (µg/m³)Level
Jan79Unhealthy
Feb72Unhealthy
Mar42Poor
Apr39Poor
May24Moderate
Jun22Moderate
Jul20Moderate
Aug18Moderate
Sep18Moderate
Oct24Moderate
Nov34Moderate
Dec67Unhealthy
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Foso is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecfrost-free year round
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May1000
Jun1000
Jul1000
Aug1000
Sep1000
Oct1000
Nov1000
Dec1000

Growing degree days

Degree days (base 10°C)Frost-free shaded

Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Foso banks about 6,078 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around February.

02,0004,0006,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan531
Feb510
Mar561
Apr531
May525
Jun476
Jul473
Aug469
Sep474
Oct507
Nov503
Dec519

Solar energy

Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.

Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.

Foso receives about 4.6 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 3.7 and 5.3 kWh/m².

The brighter stretch of the year lasts 5.4 months, from around Dec 6 to May 19. The brightest month is April, averaging about 5.2 kWh/m² (bright).

The dimmest month is August, down near 3.8 kWh/m² — roughly 28% less than the April peak.

0123456JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightApr 35.3 kWhAug 23.7 kWh
Solar energy (kWh/m²)Level
Jan5.1Bright
Feb5.2Bright
Mar5.2Bright
Apr5.2Bright
May4.7Bright
Jun3.9Moderate
Jul3.8Moderate
Aug3.8Moderate
Sep4.1Bright
Oct4.5Bright
Nov4.7Bright
Dec4.7Bright

Where is Foso?

Foso sits at 5.7°N, 1.3°W, 148 m above sea level, in Ghana. The nearest listed city is Twifu Praso, 31 km away.

Assin FosoAkim OdaMankesimSaltpondDunkwaAkwatiaKade

Topography around Foso

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

Within 3 km, the terrain around Foso has only modest variations in elevation — a maximum elevation change of 92 m around an average of 158 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 224 m; within 80 km, large variations in elevation — a maximum elevation change of 772 m.

The land around Foso is covered by trees (69%) and artificial surfaces (25%) within 3 km, trees (94%) within 16 km, and trees (89%) within 80 km.

3 km
92 m
16 km
224 m
80 km
772 m
treesshrubsgrasslandartificial surfaceswater
Nearby: Twifu Praso 31 km · Assin Foso 40 km · Akim Oda 42 km · Mankesim 56 km · Saltpond 60 km · Dunkwa 61 km · Akwatia 65 km · Kade 66 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 Foso (5.7012°, -1.2866°, elevation 148 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. 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).