Climate and average weather in Kosti

In Kosti, the summers are sweltering, dry, and clear and the winters are sweltering and clear.

Best: early January to late January

Over the course of the year, the temperature in Kosti typically varies from 19°C to 41°C, and is rarely below 15°C or above 43°C. April is the hottest month of the year, while January is the coldest.

Based on the travel score, the best times of year to visit Kosti for warm-weather activities are from early January to late January and mid December to late December.

Hottest
Apr
41°
Coldest
Jan
19°
Wettest
Aug
73 mm
Driest
Feb
0 mm
Rain / yr
238 mm
52 wet days
Daylight
11.2–12.8 h
shortest–longest
Elevation
387 m
13.2°N
Clearest
Nov
16% cloud

Kosti is major city in Sudan.

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

Kosti 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 January to late January.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

The hot season lasts 2.4 months, from March 24 to June 4, with daily high temperatures above 39°C. The hottest month of the year in Kosti is April, with an average high of 41°C and low of 26°C.

The cool season lasts 1.8 months, from December 10 to February 1, with daily high temperatures below 34°C. The coldest month of the year in Kosti is January, with an average low of 19°C and high of 33°C.

Days typically run about 12°C warmer than nights, with the widest day–night swing (around 15°C) in March.

15°20°25°30°35°40°45°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3319
Feb3521
Mar3824
Apr4126
May4028
Jun3827
Jul3525
Aug3324
Sep3525
Oct3725
Nov3723
Dec3420

How hot and cold Kosti 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, Kosti feels like about 41°C (around April 24). Nearly every day a year carries some heat stress, and 106 of them tip into dangerous heat (feels-like above 39°C), peaking in April.

15°20°25°30°35°40°45°JanFebMarAprMayJunJulAugSepOctNovDecdangerous heat
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan33331919
Feb35352121
Mar38382424
Apr41412626
May40402728
Jun40382727
Jul37352525
Aug36332424
Sep38352525
Oct38372525
Nov37372323
Dec34342020

Average hourly temperature in Kosti

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 April afternoons, near 41°C, and coldest before dawn in January, near 19°C.

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

Kosti 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
Jan33° / 19°0011.34.7
Feb35° / 21°0011.63.1
Mar38° / 24°0011.91.0
Apr41° / 26°20.512.30.0
May40° / 28°154.112.60.1
Jun38° / 27°236.312.81.1
Jul35° / 25°6812.412.72.5
Aug33° / 24°7313.412.43.2
Sep35° / 25°399.612.12.6
Oct37° / 25°175.511.71.7
Nov37° / 23°00.111.42.3
Dec34° / 20°0011.24.2

Chance of rain

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

Kosti gets about 238 mm of precipitation a year. On a typical day the chance of rain is mostly dry, but that rises and falls sharply with the seasons.

The wetter season lasts 5.2 months, from around May 18 to Oct 21, peaking in August at about 45% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jan 1.

August is the wettest month by volume, with 73 mm over about 13 wet days; February is the driest, with 0 mm.

0%10%20%30%40%50%60%JanFebMarAprMayJunJulAugSepOctNovDecdrierwetterdriermostly drysome rainoften wetvery wetAug 3 · 45%Jan 1 · 0%
Rain on a day (%)Rain days
Jan00
Feb00
Mar00
Apr21
May134
Jun216
Jul4012
Aug4313
Sep3210
Oct176
Nov10
Dec00

Monthly rainfall

Over a full year, Kosti collects about 238 mm of rain across 52 wet days — roughly 20 mm in an average month.

It doesn’t fall evenly. August is the wettest month with 73 mm, while February is the driest at just 0 mm. The three wettest months alone bring about 76% of the year’s total.

0255075100JanFebMarAprMayJunJulAugSepOctNovDec0021523687339170
Rainfall (mm)Rain days
Jan00
Feb00
Mar00
Apr21
May154
Jun236
Jul6812
Aug7313
Sep3910
Oct176
Nov00
Dec00

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Kosti, 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 4 and lasts for 7.6 months, ending around May 21. The clearest month is November, when the sky is clear, mostly clear, or partly cloudy 93% of the time on average.

The cloudier part of the year begins around June 9 and lasts for 3.8 months, ending around October 3. The cloudiest month is August, when it is overcast or mostly cloudy 53% 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%JanFebMarAprMayJunJulAugSepOctNovDecNov 14 · 94%Aug 10 · 42%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan8713
Feb8812
Mar8812
Apr8812
May8020
Jun7426
Jul5545
Aug4753
Sep6832
Oct8317
Nov937
Dec919

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. The longest day, around June 9, brings about 12 h 48 min of light; the shortest, around January 1, only 11 h 12 min — a swing of roughly 1 h 36 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan11.37:206:38
Feb11.67:176:51
Mar11.97:026:56
Apr12.36:416:58
May12.66:277:04
Jun12.86:267:13
Jul12.76:347:16
Aug12.46:407:07
Sep12.16:426:46
Oct11.76:436:25
Nov11.46:536:16
Dec11.27:096:22

Sunny days

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

Kosti averages about 19 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 5 and 26 days.

The sunnier stretch runs 7.2 months, from around Oct 12 to May 19. The sunniest month is November, with roughly 25 sunny days (brilliant).

The greyest month is August, down near 6 sunny days — about 75% fewer than the November peak.

051015202530JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedbrightbrilliantNov 1426 daysAug 95 days
Sunny daysSky
Jan24Brilliant
Feb21Brilliant
Mar24Brilliant
Apr24Brilliant
May20Bright
Jun14Mixed
Jul9Mixed
Aug7Gloomy
Sep13Mixed
Oct20Bright
Nov25Brilliant
Dec25Brilliant

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.

In Kosti, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 5.4 months, from around May 17 to October 27. The muggiest month is July, when the air feels humid, muggy or worse about 99% of the time.

The most comfortable stretch runs from around October 28 to May 16, and March is the most comfortable month — the air is dry or comfortable 100% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecMar 3 · 100%Jul 16 · 0%oppressivedrymuggycomfortablehumidcomfortablehumidcomfortable
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan1000000
Feb1000000
Mar991000
Apr856720
May421225184
Jun3633507
Jul0076626
Aug0014158
Sep0145540
Oct199174510
Nov886420
Dec1000000

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 Kosti is typically light breeze, near 13 km/h, and varies moderately with the seasons.

The windier part of the year lasts 2.2 months, from around Jun 2 to Aug 7. The windiest month is June, averaging about 14 km/h (light breeze).

The calmer part of the year runs from around Aug 8 to Nov 15, with October the calmest month at about 9 km/h.

05101520JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmercalmlight breezeJun 24 · 15 km/hOct 15 · 9 km/h
Wind speed (km/h)Feels
Jan14light breeze
Feb15light breeze
Mar14light breeze
Apr12calm
May11calm
Jun14light breeze
Jul14light breeze
Aug12light breeze
Sep10calm
Oct9calm
Nov12light breeze
Dec14light breeze

Hazard calendar for Kosti

In seasonPeak

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

Kosti sees seasonal dust haze (April–August), heaviest in April.

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

Best time to visit Kosti

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around late January, Kosti 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 Kosti for general outdoor tourist activities is from mid December to late January, with a peak score in the second week of January.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJan 9 · 4.9

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
Jan4.6fair
Feb3.0poor
Mar1.0poor
Apr0.0poor
May0.2poor
Jun1.1poor
Jul2.5poor
Aug3.2poor
Sep2.6poor
Oct1.7poor
Nov2.3poor
Dec4.1fair

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 Kosti for hot-weather activities is from late November to mid February, with a peak score in the second week of January.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationJan 8 · 8.3

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 Kosti, 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.

For a warm-season trip around April (highs near 41°C), the essentials are light clothes and sun protection. In the cold season around January (highs near 33°C), pack light clothes and sun protection.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In April, Kosti sees daytime highs around 41°C and nights near 26°C. Pack light clothes and sun protection.

UV index (midday) in Kosti 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 Kosti peaks around March 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeVery highMar 18UV 13Dec 12UV 8
UV index (midday)Level
Jan10Very high
Feb12Extreme
Mar13Extreme
Apr12Extreme
May10Extreme
Jun11Extreme
Jul9Very high
Aug13Extreme
Sep11Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Average hourly UV index in Kosti

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)
Jan75
Feb7.55.5
Mar86
Apr86
May85.5
Jun85.5
Jul7.55
Aug86
Sep85.5
Oct7.55.5
Nov6.54.5
Dec6.54

Air quality in Kosti 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 Kosti is worst in March — around 46 µg/m³ PM2.5 (poor), about 2.6× the cleanest month (August, 18 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateMar 1745 µg/m³Aug 1418 µg/m³
PM2.5 (µg/m³)Level
Jan40Poor
Feb41Poor
Mar46Poor
Apr41Poor
May28Moderate
Jun23Moderate
Jul19Moderate
Aug18Moderate
Sep21Moderate
Oct24Moderate
Nov25Moderate
Dec32Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Kosti 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. Kosti banks about 7,337 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around May.

02,0004,0006,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan498
Feb508
Mar652
Apr699
May737
Jun673
Jul615
Aug577
Sep595
Oct656
Nov599
Dec529

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.

Kosti receives about 6.2 kWh/m² a day of solar energy on average — intense — with a clear seasonal swing between 5.5 and 7.4 kWh/m².

The brighter stretch of the year lasts 4.3 months, from around Jan 31 to Jun 10. The brightest month is April, averaging about 7.4 kWh/m² (intense).

The dimmest month is August, down near 5.6 kWh/m² — roughly 25% less than the April peak.

0123456789JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmerdimmoderatebrightintenseApr 97.4 kWhAug 55.5 kWh
Solar energy (kWh/m²)Level
Jan6.0Bright
Feb6.5Intense
Mar7.2Intense
Apr7.4Intense
May6.8Intense
Jun6.2Intense
Jul5.6Bright
Aug5.5Bright
Sep6.0Bright
Oct6.0Bright
Nov6.1Intense
Dec5.8Bright

Where is Kosti?

Kosti sits at 13.2°N, 32.7°E, 387 m above sea level, in Sudan. The nearest listed city is Rabak, 9.0 km away.

SennarKinānaMaiurnoUmm Shawkah

Topography around Kosti

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

Within 3 km, the terrain around Kosti has only modest variations in elevation — a maximum elevation change of 15 m around an average of 383 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 35 m; within 80 km, significant variations in elevation — a maximum elevation change of 295 m.

The land around Kosti is covered by artificial surfaces (53%) within 3 km, grassland (48%) and cropland (32%) within 16 km, and cropland (59%) and grassland (36%) within 80 km.

3 km
15 m
16 km
35 m
80 km
295 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
Nearby: Rabak 9.0 km · Al Jazeera Aba 18 km · Tandaltī 88 km · Ad Douiem 101 km · Sennar 108 km · Kināna 112 km · Maiurno 112 km · Umm Shawkah 121 km

Sudan travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / D / F / G
230 V · 50 Hz
Prices
≈ 215% of US
price level, 2025
GDP per capita
$1,165
2025
Happiness
4.1 / 10
World Happiness, 2017
Homicide rate
5.1
per 100k, 2008
Road deaths
26.8
per 100k/yr, 2019
Income group
Low
World Bank
English
Very low
EF EPI 421

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 Kosti (13.1629°, 32.6635°, elevation 387 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).