Climate and average weather in Wonji

In Wonji, the weather is hot, wet, and mostly clear and remarkably steady, with daytime highs holding near hot levels all year. The wettest stretch peaks around August.

Best: mid October to late December

Over the course of the year, the temperature in Wonji typically varies from 12°C to 31°C, and is rarely below 9°C or above 33°C. May is the hottest month of the year, while August is the coldest.

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

Hottest
May
31°
Coldest
Aug
17°
Wettest
Aug
83 mm
Driest
Dec
2 mm
Rain / yr
330 mm
72 wet days
Daylight
11.5–12.5 h
shortest–longest
Elevation
1,559 m
8.5°N
Clearest
Dec
27% cloud

Wonji 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 October to late December.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Wonji stay fairly even through the year, without a distinct hot or cool season. The warmest month is May, with an average high of 31°C and low of 17°C; the coolest is August, with an average low of 17°C and high of 27°C.

Days typically run about 13°C warmer than nights, with the widest day–night swing (around 15°C) in February.

10°15°20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2813
Feb2914
Mar3016
Apr3017
May3117
Jun3017
Jul2717
Aug2717
Sep2817
Oct2916
Nov2814
Dec2712

Average hourly temperature in Wonji

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 May afternoons, near 31°C, and coldest before dawn in August, near 17°C.

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

Wonji 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
Jan28° / 13°30.911.68.1
Feb29° / 14°51.311.76.8
Mar30° / 16°224.211.95.8
Apr30° / 17°306.112.25.3
May31° / 17°294.912.45.4
Jun30° / 17°174.412.56.0
Jul27° / 17°5313.212.46.0
Aug27° / 17°8318.412.35.4
Sep28° / 17°6213.3125.9
Oct29° / 16°173.211.86.9
Nov28° / 14°61.111.68.2
Dec27° / 12°20.511.58.5

Chance of rain

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

Wonji gets about 330 mm of precipitation a year. On a typical day the chance of rain is some rain, but that rises and falls sharply with the seasons.

The wetter season lasts 3.4 months, from around Jun 23 to Oct 3, peaking in August at about 60% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Dec 24.

August is the wettest month by volume, with 83 mm over about 18 wet days; December is the driest, with 2 mm.

0%10%20%30%40%50%60%70%JanFebMarAprMayJunJulAugSepOctNovDecdrierwetterdriermostly drysome rainoften wetvery wetAug 15 · 60%Dec 24 · 1%
Rain on a day (%)Rain days
Jan31
Feb51
Mar134
Apr206
May165
Jun164
Jul4313
Aug5818
Sep4413
Oct113
Nov41
Dec21

Monthly rainfall

Over a full year, Wonji collects about 330 mm of rain across 72 wet days — roughly 28 mm in an average month.

It doesn’t fall evenly. August is the wettest month with 83 mm, while December is the driest at just 2 mm. The three wettest months alone bring about 60% of the year’s total.

0255075100JanFebMarAprMayJunJulAugSepOctNovDec35223029175383621762
Rainfall (mm)Rain days
Jan31
Feb51
Mar224
Apr306
May295
Jun174
Jul5313
Aug8318
Sep6213
Oct173
Nov61
Dec21

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Wonji, 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 August 23 and lasts for 6.6 months, ending around March 11. The clearest month is December, when the sky is clear, mostly clear, or partly cloudy 86% of the time on average.

The cloudier part of the year begins around March 12 and lasts for 5.4 months, ending around August 22. The cloudiest month is April, when it is overcast or mostly cloudy 37% 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 12 · 88%Apr 28 · 59%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan8218
Feb7822
Mar7426
Apr6337
May6832
Jun7327
Jul6634
Aug6931
Sep8119
Oct7921
Nov8515
Dec8614

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 May 31, brings about 12 h 30 min of light; the shortest, around January 1, only 11 h 30 min — a swing of roughly 1 hour.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan11.66:466:19
Feb11.76:466:29
Mar11.96:356:31
Apr12.26:186:29
May12.46:086:31
Jun12.56:096:38
Jul12.46:156:42
Aug12.36:196:36
Sep12.06:166:19
Oct11.86:146:02
Nov11.66:205:57
Dec11.56:346:05

Sunny days

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

Wonji averages about 16 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 9 and 22 days.

The sunnier stretch runs 5.4 months, from around Oct 4 to Mar 16. The sunniest month is December, with roughly 21 sunny days (bright).

The greyest month is August, down near 10 sunny days — about 53% fewer than the December peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedbrightbrilliantDec 1322 daysAug 59 days
Sunny daysSky
Jan20Bright
Feb17Bright
Mar16Bright
Apr11Mixed
May14Mixed
Jun15Bright
Jul11Mixed
Aug10Mixed
Sep13Mixed
Oct18Bright
Nov20Bright
Dec22Bright

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 Wonji, the air stays dry or comfortable essentially all year. Even in April, the muggiest month, it feels humid or worse only about 5% of the time — humidity is not something you need to plan around here.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDeccomfortabledry
Dry (%)Comfortable (%)Humid (%)
Jan87130
Feb82171
Mar69283
Apr58375
May59374
Jun46522
Jul12871
Aug4934
Sep25722
Oct77212
Nov87112
Dec89110

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 Wonji is typically calm, near 10 km/h, and varies moderately with the seasons.

The windier part of the year lasts 5.7 months, from around Oct 13 to Apr 2. The windiest month is November, averaging about 12 km/h (light breeze).

The calmer part of the year runs from around Aug 2 to Oct 12, with September the calmest month at about 7 km/h.

05101520JanFebMarAprMayJunJulAugSepOctNovDecwindiercalmerwindiercalmlight breezeNov 9 · 12 km/hSep 16 · 7 km/h
Wind speed (km/h)Feels
Jan11calm
Feb12calm
Mar11calm
Apr10calm
May9calm
Jun10calm
Jul11calm
Aug9calm
Sep7calm
Oct11calm
Nov12light breeze
Dec12calm

Best time to visit Wonji

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around late October, Wonji is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.

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 Wonji for general outdoor tourist activities is from mid October to mid February, with a peak score in the third week of December.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timetravel scoretemperaturecloudsprecipitationDec 18 · 8.6

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
Jan8.1ideal
Feb6.8good
Mar5.8good
Apr5.3fair
May5.4fair
Jun5.9good
Jul6.0good
Aug5.5fair
Sep5.9good
Oct7.0good
Nov8.1ideal
Dec8.5ideal

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 Wonji for hot-weather activities is from late September to early July, with a peak score in the first week of February.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationFeb 5 · 8.7

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 Wonji, 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.

Wonji packs about the same all year — highs hold near 31°C. Across the year the things worth having are light clothes, sun protection and rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In May, Wonji sees daytime highs around 31°C and nights near 17°C. Pack light clothes and sun protection. About 5 days see rain.

UV index (midday) in Wonji 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 Wonji peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 10 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 15Dec 10UV 11
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar16Extreme
Apr15Extreme
May13Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep13Extreme
Oct13Extreme
Nov11Extreme
Dec11Extreme

Average hourly UV index in Wonji

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 8.5 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)
Jan7.56
Feb86
Mar8.56.5
Apr86.5
May86.5
Jun86
Jul86
Aug8.56.5
Sep86
Oct7.56
Nov7.55.5
Dec7.55.5

Air quality in Wonji 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 Wonji is worst in June — around 39 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateModerateJun 1738 µg/m³Nov 2324 µg/m³
PM2.5 (µg/m³)Level
Jan25Moderate
Feb26Moderate
Mar27Moderate
Apr26Moderate
May31Moderate
Jun39Poor
Jul32Moderate
Aug29Moderate
Sep36Poor
Oct32Moderate
Nov24Moderate
Dec24Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Wonji 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. Wonji banks about 4,395 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around May.

01,0002,0003,0004,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan313
Feb326
Mar407
Apr413
May433
Jun401
Jul376
Aug367
Sep367
Oct375
Nov321
Dec295

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.

Wonji receives about 6.0 kWh/m² a day of solar energy — intense — and it stays remarkably steady, holding between 5.3 and 6.6 kWh/m² all year. For solar panels, output here is a flat line, not a seasonal wave.

012345678JanFebMarAprMayJunJulAugSepOctNovDecdimmoderatebrightintenseMar 46.6 kWhJul 275.3 kWh
Solar energy (kWh/m²)Level
Jan6.0Intense
Feb6.5Intense
Mar6.6Intense
Apr6.5Intense
May6.2Intense
Jun5.6Bright
Jul5.4Bright
Aug5.6Bright
Sep5.9Bright
Oct6.3Intense
Nov6.2Intense
Dec5.9Bright

Where is Wonji?

Wonji sits at 8.5°N, 39.2°E, 1,559 m above sea level, in Ethiopia. The nearest listed city is Wenjī, 7.0 km away.

Topography around Wonji

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

Within 3 km, the terrain around Wonji has only modest variations in elevation — a maximum elevation change of 154 m around an average of 1,563 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 536 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,227 m.

The land around Wonji is covered by cropland (58%) within 3 km, cropland (53%) within 16 km, and cropland (70%) within 80 km.

3 km
154 m
16 km
536 m
80 km
3,227 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
Nearby: Wenjī 7.0 km · Adama 12 km · Mojo 18 km · Sīrē 33 km · Welench’ītī 33 km · ‘Alem T’ēna 34 km · Īteya 36 km · Huruta 37 km

Ethiopia travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type C / E / F / L
220 V · 50 Hz
Prices
≈ 37% of US
price level, 2025
GDP per capita
$933
2025
Happiness
4.0 / 10
World Happiness, 2025
Safe drinking water
14%
of population, 2024
Homicide rate
8.5
per 100k, 2012
Road deaths
28.2
per 100k/yr, 2019
Income group
Low
World Bank
English
Low
EF EPI 499
Religion
Ethiopian Orthodox 44%Muslim 31%Protestant 23%other 1%

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 Wonji (8.4541°, 39.2175°, elevation 1,559 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).