Coyah in Summer
In summer (June, July and August), Coyah sees average daytime highs around 28°C and overnight lows near 23°C, with 1664 mm of rain over about 90 wet days across the season. It is the coldest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 28°C. The sky is clear or mostly clear about 0% of the time across summer, and the air most often feels oppressive.
Summer is Coyah's weakest season of the year to visit on our travel score. For the whole year in context, see Coyah's year-round climate.
- Avg daytime high
- 28°C
- coldest season of the year
- Avg overnight low
- 23°C
- Rainfall
- 1664 mm
- 90 wet days
- Avg wind
- 7 km/h
- Travel score
- 3.1
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Coyah in Summer
Across summer, daytime highs hold fairly steady around 28°C.
A typical summer day in Coyah reaches about 28°C and drops to 23°C overnight. The warmest of the three months is June, the coolest August.
How summer really feels in Coyah
Once humidity and wind are folded in, summer brings about 25 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Coyah weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 32° / 21° | 3 | 0.8 | 11.5 | 5.2 |
| Feb | 33° / 22° | 1 | 0.3 | 11.7 | 4.8 |
| Mar | 33° / 23° | 1 | 0.3 | 11.9 | 4.6 |
| Apr | 33° / 24° | 7 | 1.4 | 12.2 | 4.5 |
| May | 31° / 25° | 86 | 14.1 | 12.4 | 3.8 |
| Jun | 29° / 24° | 301 | 28.2 | 12.6 | 3.0 |
| Jul | 28° / 23° | 623 | 30.6 | 12.5 | 3.2 |
| Aug | 28° / 23° | 741 | 30.7 | 12.3 | 3.2 |
| Sep | 29° / 23° | 465 | 29.2 | 12.1 | 3.0 |
| Oct | 30° / 23° | 214 | 28.2 | 11.8 | 2.9 |
| Nov | 30° / 23° | 83 | 16.7 | 11.6 | 4.2 |
| Dec | 31° / 22° | 11 | 2.6 | 11.4 | 5.5 |
Cloud cover in Summer
The sky is clear or mostly clear about 0% of the time across summer.
Chance of precipitation in Summer
Coyah gets around 1664 mm of rain over 90 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 7 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 30 min in early June to 12 h 12 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 3.7 kWh/m².
Hazard calendar for Coyah
In summer, Coyah overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Coyah's monsoon runs July–September, when most of the year's rain falls.
Coyah sees seasonal dust haze (February–May), heaviest in February.
Is summer a good time to visit Coyah?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in Coyah.
What to pack for Coyah in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Coyah sees daytime highs around 28°C and nights near 23°C. Pack light clothes and rain gear. About 90 days see rain.
Sea temperature near Coyah in Summer
The nearest coast averages about 28°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 28 km away) is warmest in November at about 29°C and coldest in August near 27°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 29 | 29 |
| Comfort | Warm | Warm | Warm | Warm | Tropical | Tropical | Warm | Warm | Warm | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 28 | Warm |
| May | 28 | Tropical |
| Jun | 28 | Tropical |
| Jul | 28 | Warm |
| Aug | 27 | Warm |
| Sep | 28 | Warm |
| Oct | 28 | Tropical |
| Nov | 29 | Tropical |
| Dec | 29 | Tropical |
UV index in Coyah in Summer
Clear-sky midday UV across summer averages 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 Coyah peaks around March 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 8 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 9 | 12 | 13 | 11 | 12 | 12 | 12 | 13 | 13 | 11 | 8 | 8 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 12 | Extreme |
| Mar | 13 | Extreme |
| Apr | 11 | Extreme |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 13 | Extreme |
| Oct | 11 | Extreme |
| Nov | 8 | Very high |
| Dec | 8 | Very high |
Air quality in Coyah in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Coyah is worst in April — around 95 µg/m³ PM2.5 (unhealthy), about 5.5× the cleanest month (August, 17 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 79 | 89 | 74 | 95 | 67 | 30 | 19 | 17 | 21 | 33 | 46 | 74 |
| Level | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Moderate | Moderate | Moderate | Moderate | Moderate | Poor | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 79 | Unhealthy |
| Feb | 89 | Unhealthy |
| Mar | 74 | Unhealthy |
| Apr | 95 | Unhealthy |
| May | 67 | Unhealthy |
| Jun | 30 | Moderate |
| Jul | 19 | Moderate |
| Aug | 17 | Moderate |
| Sep | 21 | Moderate |
| Oct | 33 | Moderate |
| Nov | 46 | Poor |
| Dec | 74 | Unhealthy |
Where is Coyah?
Coyah sits at 9.7°N, 13.4°W, 13 m above sea level, in Guinea. The nearest listed city is Manéah, 5.0 km away.
Topography around Coyah
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Coyah.
Within 3 km, the terrain around Coyah has significant variations in elevation — a maximum elevation change of 532 m around an average of 79 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 996 m; within 80 km, large variations in elevation — a maximum elevation change of 1,191 m.
The land around Coyah is covered by trees (43%) and artificial surfaces (32%) within 3 km, trees (39%) and grassland (27%) within 16 km, and trees (33%) and water (27%) within 80 km.
Guinea travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F / K
- 220 V · 50 Hz
- Prices
- ≈ 34% of US
- price level, 2025
- GDP per capita
- $1,877
- 2025
- Happiness
- 4.6 / 10
- World Happiness, 2025
- Road deaths
- 29.7
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- Religion
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 Coyah (9.7064°, -13.3847°, elevation 13 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.