Climate and average weather in T’īs Isat

In T’īs Isat, the summers are hot, fairly dry, and mostly clear and the winters are mild and mostly cloudy.

Best: mid October to late March

Over the course of the year, the temperature in T’īs Isat typically varies from 13°C to 28°C, and is rarely below 12°C or above 30°C. March is the hottest month of the year, while August is the coldest.

Based on the travel score, the best time of year to visit T’īs Isat for warm-weather activities is from mid October to late March.

Hottest
Mar
28°
Coldest
Aug
15°
Wettest
Aug
524 mm
Driest
Jan
3 mm
Rain / yr
1805 mm
156 wet days
Daylight
11.3–12.7 h
shortest–longest
Elevation
1,645 m
11.5°N
Clearest
Dec
27% cloud

T’īs Isat 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 March.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in T’īs Isat, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

Temperatures in T’īs Isat stay fairly even through the year, without a distinct hot or cool season. The warmest month is March, with an average high of 28°C and low of 16°C; the coolest is August, with an average low of 15°C and high of 21°C.

Days typically run about 10°C warmer than nights, with the widest day–night swing (around 12°C) in February.

10°15°20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2614
Feb2715
Mar2816
Apr2817
May2617
Jun2415
Jul2115
Aug2115
Sep2214
Oct2414
Nov2413
Dec2513

Average hourly temperature in T’īs Isat

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 March afternoons, near 28°C, and coldest before dawn in August, near 15°C.

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

T’īs Isat 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
Jan26° / 14°30.711.48.7
Feb27° / 15°40.911.68.2
Mar28° / 16°163.111.97.5
Apr28° / 17°265.812.26.9
May26° / 17°1021512.56.0
Jun24° / 15°28426.112.74.3
Jul21° / 15°52130.912.63.4
Aug21° / 15°52430.912.43.4
Sep22° / 14°24826.612.14.3
Oct24° / 14°5811.311.77.1
Nov24° / 13°153.511.58.6
Dec25° / 13°4111.38.9

Chance of rain

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

T’īs Isat gets about 1805 mm of precipitation a year. On a typical day the chance of rain is often wet, but that rises and falls sharply with the seasons.

The wetter season lasts 5.0 months, from around May 11 to Oct 10, peaking in July at about 100% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jan 29.

August is the wettest month by volume, with 524 mm over about 31 wet days; January is the driest, with 3 mm.

0%10%20%30%40%50%60%70%80%90%100%110%JanFebMarAprMayJunJulAugSepOctNovDecdrierwetterdriermostly drysome rainoften wetvery wetJul 14 · 100%Jan 29 · 0%
Rain on a day (%)Rain days
Jan21
Feb31
Mar113
Apr206
May4815
Jun8626
Jul10031
Aug10031
Sep8727
Oct3711
Nov124
Dec41

Monthly rainfall

Over a full year, T’īs Isat collects about 1805 mm of rain across 156 wet days — roughly 150 mm in an average month.

It doesn’t fall evenly. August is the wettest month with 524 mm, while January is the driest at just 3 mm. The three wettest months alone bring about 74% of the year’s total.

050100150200250300350400450500550600JanFebMarAprMayJunJulAugSepOctNovDec34162610228452152424858154
Rainfall (mm)Rain days
Jan31
Feb41
Mar163
Apr266
May10215
Jun28426
Jul52131
Aug52431
Sep24827
Oct5811
Nov154
Dec41

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In T’īs Isat, 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 September 16 and lasts for 7.7 months, ending around May 6. The clearest month is December, when the sky is clear, mostly clear, or partly cloudy 89% of the time on average.

The cloudier part of the year begins around May 26 and lasts for 3.7 months, ending around September 15. The cloudiest month is July, 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%JanFebMarAprMayJunJulAugSepOctNovDecDec 14 · 90%Aug 3 · 13%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan8416
Feb8020
Mar8020
Apr7624
May6634
Jun4753
Jul1882
Aug2179
Sep6238
Oct7723
Nov8713
Dec8911

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 8, brings about 12 h 42 min of light; the shortest, around January 1, only 11 h 18 min — a swing of roughly 1 h 24 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan11.46:576:21
Feb11.66:566:33
Mar11.96:426:37
Apr12.26:226:38
May12.56:106:42
Jun12.76:106:50
Jul12.66:176:54
Aug12.46:226:45
Sep12.16:226:26
Oct11.76:226:07
Nov11.56:315:59
Dec11.36:466:06

Sunny days

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

T’īs Isat averages about 13 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 23 days.

The sunnier stretch runs 6.8 months, from around Oct 1 to Apr 25. The sunniest month is December, with roughly 23 sunny days (bright).

The greyest month is August, down near 0 sunny days — about 98% fewer than the December peak.

051015202530JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedbrightbrilliantDec 1523 daysAug 50 days
Sunny daysSky
Jan20Bright
Feb18Bright
Mar17Bright
Apr15Bright
May11Mixed
Jun5Gloomy
Jul1Gloomy
Aug0Gloomy
Sep7Gloomy
Oct16Bright
Nov21Bright
Dec23Bright

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 T’īs Isat, the air stays dry or comfortable essentially all year. Even in June, the muggiest month, it feels humid or worse only about 11% of the time — humidity is not something you need to plan around here.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJan 21 · 100%Jun 9 · 88%humiddrycomfortablecomfortablehumidcomfortable
Dry (%)Comfortable (%)Humid (%)
Jan9910
Feb9910
Mar9550
Apr88120
May42544
Jun38611
Jul0946
Aug0946
Sep3943
Oct34651
Nov77230
Dec9550

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 T’īs Isat is steady company: average speeds sit near 6 km/hcalm — in every month of the year, with no meaningful windy or calm season.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezeApr 11 · 8 km/hSep 10 · 5 km/h
Wind speed (km/h)Feels
Jan7calm
Feb7calm
Mar7calm
Apr8calm
May7calm
Jun6calm
Jul5calm
Aug5calm
Sep5calm
Oct6calm
Nov6calm
Dec6calm

Hazard calendar for T’īs Isat

In seasonPeak

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

T’īs Isat's monsoon runs June–September, when most of the year's rain falls.

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

Best time to visit T’īs Isat

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in T’īs Isat throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around mid March, T’īs Isat 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 T’īs Isat for general outdoor tourist activities is from mid October to late March, with a peak score in the third week of December.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timetravel scoretemperaturecloudsprecipitationDec 19 · 9.0

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
Jan8.7ideal
Feb8.2ideal
Mar7.5ideal
Apr6.9good
May6.0good
Jun4.4fair
Jul3.4poor
Aug3.4poor
Sep4.4fair
Oct7.1good
Nov8.6ideal
Dec8.9ideal

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 T’īs Isat for hot-weather activities is from late October to late April, with a peak score in the last week of February.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationFeb 28 · 8.5

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 T’īs Isat, 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 March (highs near 28°C), the essentials are light clothes and sun protection. In the cold season around August (highs near 21°C), pack rain gear and sun protection.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In March, T’īs Isat sees daytime highs around 28°C and nights near 16°C. Pack light clothes and sun protection. About 3 days see rain.

UV index (midday) in T’īs Isat 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 T’īs Isat peaks around March 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 11 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 21UV 15Dec 11UV 10
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar15Extreme
Apr15Extreme
May13Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep13Extreme
Oct13Extreme
Nov10Extreme
Dec10Very high

Average hourly UV index in T’īs Isat

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 6.5 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)
Jan7.55.5
Feb86
Mar86.5
Apr8.57
May8.56.5
Jun8.56.5
Jul86
Aug8.56.5
Sep86
Oct86
Nov7.55
Dec75

Air quality in T’īs Isat 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 T’īs Isat is worst in October — around 41 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorOct 2241 µg/m³Aug 927 µg/m³
PM2.5 (µg/m³)Level
Jan37Poor
Feb37Poor
Mar35Moderate
Apr32Moderate
May28Moderate
Jun32Moderate
Jul27Moderate
Aug27Moderate
Sep36Poor
Oct41Poor
Nov41Poor
Dec39Poor
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

T’īs Isat 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. T’īs Isat banks about 3,586 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around April.

01,0002,0003,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan304
Feb316
Mar378
Apr376
May357
Jun283
Jul248
Aug246
Sep250
Oct278
Nov266
Dec283

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.

T’īs Isat receives about 5.7 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.3 and 6.8 kWh/m².

The brighter stretch of the year lasts 4.6 months, from around Jan 11 to May 30. The brightest month is April, averaging about 6.7 kWh/m² (intense).

The dimmest month is July, down near 4.4 kWh/m² — roughly 33% less than the April peak.

012345678JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerdimmoderatebrightintenseApr 76.8 kWhJul 274.3 kWh
Solar energy (kWh/m²)Level
Jan5.8Bright
Feb6.3Intense
Mar6.6Intense
Apr6.7Intense
May6.1Intense
Jun5.2Bright
Jul4.4Bright
Aug4.7Bright
Sep5.7Bright
Oct6.0Bright
Nov5.8Bright
Dec5.6Bright

Where is T’īs Isat?

T’īs Isat sits at 11.5°N, 37.6°E, 1,645 m above sea level, in Ethiopia. The nearest listed city is Bahir Dar, 24 km away.

Topography around T’īs Isat

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of T’īs Isat.

Within 3 km, the terrain around T’īs Isat has significant variations in elevation — a maximum elevation change of 333 m around an average of 1,655 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,049 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,849 m.

The land around T’īs Isat is covered by cropland (78%) within 3 km, cropland (70%) within 16 km, and cropland (71%) within 80 km.

3 km
333 m
16 km
1,049 m
80 km
2,849 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
Nearby: Bahir Dar 24 km · Ādēt 26 km · Mer’āwī 46 km · Werota 50 km · Mot’a 54 km · Debre Tabor 62 km · Gurbetē 70 km · Ādīs Zemen 74 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 T’īs Isat (11.4833°, 37.5833°, elevation 1,645 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).