Climate and average weather in Oyo

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

Best: early June to late August

Over the course of the year, the temperature in Oyo typically varies from 22°C to 31°C, and is rarely below 21°C or above 34°C. February is the hottest month of the year, while July is the coldest.

Based on the travel score, the best time of year to visit Oyo for warm-weather activities is from early June to late August.

Hottest
Feb
31°
Coldest
Jul
22°
Wettest
Nov
160 mm
Driest
Jul
33 mm
Rain / yr
1329 mm
221 wet days
Daylight
11.9–12.1 h
shortest–longest
Elevation
320 m
1.2°S
Clearest
Jun
61% cloud

Oyo is village in Republic of the Congo.

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

Oyo 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 early June to late August.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Oyo stay fairly even through the year, without a distinct hot or cool season. The warmest month is February, with an average high of 31°C and low of 23°C; the coolest is July, with an average low of 22°C and high of 29°C.

Days typically run about 8°C warmer than nights year-round.

20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3123
Feb3123
Mar3123
Apr3123
May3123
Jun3023
Jul2922
Aug2922
Sep3022
Oct3022
Nov3022
Dec3023

How hot and cold Oyo 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, Oyo feels like about 36°C (around March 31). About 325 days a year carry some heat stress, peaking in March.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan34312323
Feb35312323
Mar36312323
Apr36312323
May35312323
Jun33302323
Jul32292222
Aug32292222
Sep33302222
Oct33302222
Nov34302222
Dec34302223

Average hourly temperature in Oyo

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 31°C, and coldest before dawn in July, near 22°C.

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

Oyo 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
Jan31° / 23°11017.512.13.6
Feb31° / 23°11817.5123.2
Mar31° / 23°13921.2123.1
Apr31° / 23°14622.3123.0
May31° / 23°1071911.93.7
Jun30° / 23°441011.95.2
Jul29° / 22°338.411.95.5
Aug29° / 22°6414.2124.7
Sep30° / 22°11321.6123.6
Oct30° / 22°15925.1123.2
Nov30° / 22°16023.212.13.3
Dec30° / 23°13621.212.13.6

Chance of rain

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

Oyo gets about 1329 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 3.8 months, from around Sep 2 to Dec 26, peaking in October at about 82% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jun 21.

November is the wettest month by volume, with 160 mm over about 23 wet days; July is the driest, with 33 mm.

0%10%20%30%40%50%60%70%80%90%JanFebMarAprMayJunJulAugSepOctNovDecdrierwettermostly drysome rainoften wetvery wetOct 21 · 82%Jun 21 · 27%
Rain on a day (%)Rain days
Jan5718
Feb6318
Mar6921
Apr7422
May6019
Jun3410
Jul288
Aug4614
Sep7122
Oct8125
Nov7823
Dec6721

Monthly rainfall

Over a full year, Oyo collects about 1329 mm of rain across 221 wet days — roughly 111 mm in an average month.

It doesn’t fall evenly. November is the wettest month with 160 mm, while July is the driest at just 33 mm. The three wettest months alone bring about 35% of the year’s total.

0255075100125150175200JanFebMarAprMayJunJulAugSepOctNovDec110118139146107443364113159160136
Rainfall (mm)Rain days
Jan11018
Feb11818
Mar13921
Apr14622
May10719
Jun4410
Jul338
Aug6414
Sep11322
Oct15925
Nov16023
Dec13621

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Oyo, 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 May 7 and lasts for 4.4 months, ending around September 16. The clearest month is June, when the sky is clear, mostly clear, or partly cloudy 49% of the time on average.

The cloudier part of the year begins around September 17 and lasts for 7.6 months, ending around May 6. The cloudiest month is October, when it is overcast or mostly cloudy 82% 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%JanFebMarAprMayJunJulAugSepOctNovDecJun 19 · 52%Oct 24 · 16%mostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan2377
Feb2080
Mar2080
Apr2179
May3367
Jun4951
Jul4258
Aug3466
Sep2773
Oct1882
Nov2080
Dec2377

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, Oyo barely changes through the year: days stay near 12 h 06 min of light in every season.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.16:046:07
Feb12.06:106:12
Mar12.06:066:06
Apr12.05:575:56
May11.95:545:51
Jun11.95:585:54
Jul11.96:046:00
Aug12.06:015:59
Sep12.05:515:50
Oct12.05:405:42
Nov12.15:405:43
Dec12.15:505:54

Sunny days

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

Oyo averages about 3 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 1 and 8 days.

The sunnier stretch runs 3.7 months, from around May 4 to Aug 23. The sunniest month is June, with roughly 8 sunny days (gloomy).

The greyest month is October, down near 1 sunny days — about 84% fewer than the June peak.

051015JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedJun 158 daysOct 101 days
Sunny daysSky
Jan3Gloomy
Feb2Gloomy
Mar2Gloomy
Apr2Gloomy
May5Gloomy
Jun8Gloomy
Jul7Gloomy
Aug4Gloomy
Sep2Gloomy
Oct1Gloomy
Nov1Gloomy
Dec2Gloomy

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.

Oyo 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 January, 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 1% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecmiserableoppressivemuggy
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan116912
Feb002926
Mar0009010
Apr0008614
May0008712
Jun009902
Jul0132670
Aug0031680
Sep006940
Oct001990
Nov0001000
Dec001980

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.

Wind in Oyo is steady company: average speeds sit near 5 km/hcalm — in every month of the year, with no meaningful windy or calm season.

0510JanFebMarAprMayJunJulAugSepOctNovDeccalmJul 31 · 6 km/hMay 16 · 4 km/h
Wind speed (km/h)Feels
Jan5calm
Feb5calm
Mar5calm
Apr5calm
May4calm
Jun5calm
Jul6calm
Aug6calm
Sep5calm
Oct5calm
Nov4calm
Dec4calm

Best time to visit Oyo

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around mid August, Oyo 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 time of year to visit Oyo for general outdoor tourist activities is from early June to late August, with a peak score in the second week of July.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJul 11 · 5.6

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
Jan3.6fair
Feb3.2poor
Mar3.0poor
Apr3.0poor
May3.7fair
Jun5.1fair
Jul5.5good
Aug4.7fair
Sep3.6fair
Oct3.2poor
Nov3.3poor
Dec3.6fair

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 Oyo for hot-weather activities is from late May to late August, with a peak score in the last week of June.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJun 22 · 7.2

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 Oyo, 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.

Oyo packs about the same all year — highs hold near 31°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, Oyo sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

UV index (midday) in Oyo 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 Oyo peaks around March 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeVery highMar 18UV 13Jun 20UV 8
UV index (midday)Level
Jan12Extreme
Feb12Extreme
Mar13Extreme
Apr13Extreme
May10Extreme
Jun7Very high
Jul8Very high
Aug9Very high
Sep11Extreme
Oct13Extreme
Nov10Extreme
Dec9Very high

Average hourly UV index in Oyo

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 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)
Jan86
Feb86
Mar86
Apr86
May7.55
Jun6.53.5
Jul74
Aug7.55
Sep7.55.5
Oct86
Nov7.55.5
Dec75

Air quality in Oyo 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 Oyo is worst in July — around 50 µg/m³ PM2.5 (poor), about 4.5× the cleanest month (October, 11 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateModerateJul 2350 µg/m³Oct 2112 µg/m³
PM2.5 (µg/m³)Level
Jan27Moderate
Feb32Moderate
Mar24Moderate
Apr20Moderate
May25Moderate
Jun38Poor
Jul50Poor
Aug49Poor
Sep20Moderate
Oct11Good
Nov13Moderate
Dec21Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Oyo 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. Oyo banks about 5,972 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around March.

02,0004,0006,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan516
Feb477
Mar531
Apr512
May520
Jun480
Jul482
Aug490
Sep480
Oct498
Nov483
Dec504

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.

Oyo receives about 5.2 kWh/m² a day of solar energy — bright — and it stays remarkably steady, holding between 4.9 and 5.6 kWh/m² all year. For solar panels, output here is a flat line, not a seasonal wave.

01234567JanFebMarAprMayJunJulAugSepOctNovDecdimmoderatebrightintenseFeb 255.6 kWhNov 74.9 kWh
Solar energy (kWh/m²)Level
Jan5.4Bright
Feb5.6Bright
Mar5.5Bright
Apr5.2Bright
May5.0Bright
Jun5.0Bright
Jul5.1Bright
Aug5.1Bright
Sep5.1Bright
Oct5.0Bright
Nov5.0Bright
Dec5.0Bright

Where is Oyo?

Oyo sits at 1.2°S, 16.0°E, 320 m above sea level, in Republic of the Congo. The nearest listed city is Owando, 76 km away.

OwandoGambomaMossakaBoloboMakouaDjambalaMushieNioki

Topography around Oyo

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

Within 3 km, the terrain around Oyo has only modest variations in elevation — a maximum elevation change of 23 m around an average of 317 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 67 m; within 80 km, significant variations in elevation — a maximum elevation change of 280 m.

The land around Oyo is covered by trees (67%) within 3 km, grassland (52%) and trees (45%) within 16 km, and trees (62%) and grassland (37%) within 80 km.

3 km
23 m
16 km
67 m
80 km
280 m
treesgrasslandartificial surfaceswater
Nearby: Owando 76 km · Gamboma 80 km · Mossaka 92 km · Bolobo 114 km · Makoua 136 km · Djambala 204 km · Mushie 232 km · Nioki 258 km

Republic of the Congo travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 35% of US
price level, 2025
GDP per capita
$2,515
2025
Happiness
4.5 / 10
World Happiness, 2025
Safe drinking water
46%
of population, 2021
Road deaths
29.7
per 100k/yr, 2019
Income group
Lower middle
World Bank
Religion
Roman Catholic 33%Awakening Churches/Christian Revival 22%Protestant 20%none 11%

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 Oyo (-1.165°, 15.97°, elevation 320 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).