Climate and average weather in Impfondo

In Impfondo, 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 September.

Best: late May to late August

Over the course of the year, the temperature in Impfondo typically varies from 22°C to 32°C, and is rarely below 20°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 Impfondo for warm-weather activities are from early January to mid February and late May to late August.

Hottest
Feb
32°
Coldest
Aug
23°
Wettest
Sep
153 mm
Driest
Jan
45 mm
Rain / yr
1263 mm
212 wet days
Daylight
11.9–12.1 h
shortest–longest
Elevation
323 m
1.6°N
Clearest
Jun
67% cloud

Impfondo is city.

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

Impfondo 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 late May to late August.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Impfondo stay fairly even through the year, without a distinct hot or cool season. The warmest month is February, with an average high of 32°C and low of 23°C; the coolest is August, with an average low of 23°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)
Jan3122
Feb3223
Mar3224
Apr3124
May3124
Jun3023
Jul2923
Aug2923
Sep2922
Oct3023
Nov3023
Dec3123

How hot and cold Impfondo 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, Impfondo feels like about 37°C (around March 5). Nearly every day a year carries 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)
Jan34312222
Feb36322323
Mar36322424
Apr36312424
May35312424
Jun34302323
Jul33292323
Aug33292323
Sep33292222
Oct33302323
Nov34302323
Dec34312323

Average hourly temperature in Impfondo

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 32°C, and coldest before dawn in August, near 23°C.

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

Impfondo 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° / 22°458.411.94.3
Feb32° / 23°7311.511.93.6
Mar32° / 24°13917.9123.2
Apr31° / 24°12019.2123.3
May31° / 24°9818.812.13.6
Jun30° / 23°7915.812.14.2
Jul29° / 23°891812.14.2
Aug29° / 23°13022.312.13.8
Sep29° / 22°15323.7123.5
Oct30° / 23°14923.3123.5
Nov30° / 23°12621.111.93.6
Dec31° / 23°6111.911.94.3

Chance of rain

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

Impfondo gets about 1263 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 Jul 16 to Dec 1, peaking in September at about 79% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jan 8.

September is the wettest month by volume, with 153 mm over about 24 wet days; January is the driest, with 45 mm.

0%10%20%30%40%50%60%70%80%90%JanFebMarAprMayJunJulAugSepOctNovDecdrierwetterdriermostly drysome rainoften wetvery wetSep 3 · 79%Jan 8 · 23%
Rain on a day (%)Rain days
Jan278
Feb4112
Mar5818
Apr6319
May6019
Jun5316
Jul5918
Aug7222
Sep7824
Oct7623
Nov7021
Dec3912

Monthly rainfall

Over a full year, Impfondo collects about 1263 mm of rain across 212 wet days — roughly 105 mm in an average month.

It doesn’t fall evenly. September is the wettest month with 153 mm, while January is the driest at just 45 mm. The three wettest months alone bring about 35% of the year’s total.

0255075100125150175200JanFebMarAprMayJunJulAugSepOctNovDec457313912098798913015314912661
Rainfall (mm)Rain days
Jan458
Feb7312
Mar13918
Apr12019
May9819
Jun7916
Jul8918
Aug13022
Sep15324
Oct14923
Nov12621
Dec6112

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

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

The clearer part of the year begins around April 28 and lasts for 2.6 months, ending around July 15. The clearest month is June, when the sky is clear, mostly clear, or partly cloudy 38% of the time on average.

The cloudier part of the year begins around July 16 and lasts for 4.4 months, ending around November 27. The cloudiest month is October, when it is overcast or mostly cloudy 79% 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 11 · 40%Aug 30 · 19%mostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan3565
Feb2872
Mar2575
Apr2872
May3664
Jun3862
Jul2872
Aug2278
Sep2179
Oct2179
Nov2575
Dec3664

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, Impfondo 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)
Jan11.96:005:55
Feb11.96:046:01
Mar12.05:585:57
Apr12.05:475:49
May12.15:425:46
Jun12.15:455:51
Jul12.15:515:56
Aug12.15:505:53
Sep12.05:425:42
Oct12.05:345:32
Nov11.95:355:31
Dec11.95:475:41

Sunny days

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

Impfondo averages about 4 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 2 and 6 days.

The sunnier stretch runs 2.6 months, from around Apr 28 to Jul 16. The sunniest month is May, with roughly 5 sunny days (gloomy).

The greyest month is August, down near 2 sunny days — about 66% fewer than the May peak.

0510JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedMay 196 daysAug 282 days
Sunny daysSky
Jan5Gloomy
Feb3Gloomy
Mar3Gloomy
Apr3Gloomy
May5Gloomy
Jun5Gloomy
Jul4Gloomy
Aug2Gloomy
Sep2Gloomy
Oct2Gloomy
Nov2Gloomy
Dec5Gloomy

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.

Impfondo 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 96% of the time. Even in January, the mildest month, the air is dry or comfortable only 6% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecmiserableoppressivemuggy
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan34716701
Feb00410824
Mar00018613
Apr00008119
May00008217
Jun0003943
Jul0002980
Aug00001000
Sep00001000
Oct0000991
Nov0000990
Dec0028871

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

0510JanFebMarAprMayJunJulAugSepOctNovDeccalmFeb 18 · 7 km/hNov 4 · 4 km/h
Wind speed (km/h)Feels
Jan6calm
Feb7calm
Mar6calm
Apr6calm
May5calm
Jun5calm
Jul5calm
Aug5calm
Sep5calm
Oct5calm
Nov4calm
Dec5calm

Best time to visit Impfondo

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around mid August, Impfondo 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 Impfondo for general outdoor tourist activities run from late May to late August and again from late November to mid February, with a peak score in the first week of January.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebest timetravel scoretemperaturecloudsprecipitationJan 1 · 4.6

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
Jan4.3fair
Feb3.6fair
Mar3.2poor
Apr3.3poor
May3.6fair
Jun4.2fair
Jul4.2fair
Aug3.8fair
Sep3.5poor
Oct3.5poor
Nov3.6fair
Dec4.3fair

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best times of year to visit Impfondo for hot-weather activities run from late May to mid July and again from early December to late February, with a peak score in the first week of January.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebest timebeach/pool scoretemperaturecloudsprecipitationJan 6 · 6.8

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 Impfondo, 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.

Impfondo packs about the same all year — highs hold near 32°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, Impfondo sees daytime highs around 32°C and nights near 23°C. Pack light clothes. Worth having: rain gear and sun protection. About 12 days see rain.

UV index (midday) in Impfondo 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 Impfondo peaks around April 11 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 highApr 11UV 13Jun 20UV 8
UV index (midday)Level
Jan11Extreme
Feb12Extreme
Mar13Extreme
Apr13Extreme
May11Extreme
Jun8Very high
Jul9Very high
Aug12Extreme
Sep12Extreme
Oct12Extreme
Nov10Very high
Dec8Very high

Average hourly UV index in Impfondo

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 April 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)
Jan7.55.5
Feb86
Mar86
Apr86
May7.55.5
Jun74.5
Jul74.5
Aug7.55.5
Sep86
Oct86
Nov7.55
Dec74.5

Air quality in Impfondo 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 Impfondo is worst in February — around 50 µg/m³ PM2.5 (poor), about 5.0× the cleanest month (October, 10 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateGoodModerateFeb 1649 µg/m³Oct 910 µg/m³
PM2.5 (µg/m³)Level
Jan37Poor
Feb50Poor
Mar39Poor
Apr23Moderate
May17Moderate
Jun22Moderate
Jul25Moderate
Aug20Moderate
Sep10Good
Oct10Good
Nov17Moderate
Dec27Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Impfondo 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. Impfondo banks about 6,074 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)
Jan525
Feb491
Mar547
Apr522
May532
Jun495
Jul494
Aug490
Sep476
Oct497
Nov489
Dec516

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.

Impfondo receives about 5.1 kWh/m² a day of solar energy — bright — and it stays remarkably steady, holding between 4.7 and 5.6 kWh/m² all year. For solar panels, output here is a flat line, not a seasonal wave.

01234567JanFebMarAprMayJunJulAugSepOctNovDecdimmoderatebrightintenseJan 285.6 kWhJul 174.7 kWh
Solar energy (kWh/m²)Level
Jan5.5Bright
Feb5.6Bright
Mar5.5Bright
Apr5.3Bright
May5.1Bright
Jun4.8Bright
Jul4.7Bright
Aug4.7Bright
Sep4.8Bright
Oct4.9Bright
Nov4.9Bright
Dec5.1Bright

Where is Impfondo?

Impfondo sits at 1.6°N, 18.1°E, 323 m above sea level, in Republic of the Congo. The nearest listed city is Bétou, 168 km away.

BétouMindouliMbandakaBolengePokolaOuessoLibenge

Topography around Impfondo

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

Within 3 km, the terrain around Impfondo has only modest variations in elevation — a maximum elevation change of 28 m around an average of 320 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 43 m; within 80 km, only modest variations in elevation — a maximum elevation change of 61 m.

The land around Impfondo is covered by trees (47%) and water (30%) within 3 km, trees (87%) within 16 km, and trees (93%) within 80 km.

3 km
28 m
16 km
43 m
80 km
61 m
treesgrasslandartificial surfaceswaterwetland
Nearby: Bétou 168 km · Mindouli 173 km · Mbandaka 176 km · Bolenge 181 km · Pokola 195 km · Basankusu 199 km · Ouesso 223 km · Libenge 235 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 Impfondo (1.618°, 18.0598°, elevation 323 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).