Climate and average weather in Hedaru

In Hedaru, the weather is hot, wet, and partly cloudy and remarkably steady, with daytime highs holding near hot levels all year. The wettest stretch peaks around April.

Best: late May to mid October

Over the course of the year, the temperature in Hedaru typically varies from 15°C to 30°C, and is rarely below 13°C or above 33°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 Hedaru for warm-weather activities is from late May to mid October.

Hottest
Feb
30°
Coldest
Jul
15°
Wettest
Apr
182 mm
Driest
Jul
11 mm
Rain / yr
797 mm
122 wet days
Daylight
11.7–12.3 h
shortest–longest
Elevation
640 m
4.5°S
Clearest
Feb
55% cloud

Hedaru 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 mid October.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Hedaru stay fairly even through the year, without a distinct hot or cool season. The warmest month is February, with an average high of 30°C and low of 20°C; the coolest is July, with an average low of 15°C and high of 24°C.

Days typically run about 10°C warmer than nights, with the widest day–night swing (around 11°C) in September.

10°15°20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3019
Feb3020
Mar3020
Apr2720
May2518
Jun2516
Jul2415
Aug2515
Sep2716
Oct2818
Nov2819
Dec2920

Average hourly temperature in Hedaru

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 30°C, and coldest before dawn in July, near 15°C.

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

Hedaru 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
Jan30° / 19°549.612.25.3
Feb30° / 20°488.212.14.9
Mar30° / 20°10216.3124.4
Apr27° / 20°18222.511.94.4
May25° / 18°12415.211.85.9
Jun25° / 16°17411.77.5
Jul24° / 15°112.511.87.8
Aug25° / 15°142.911.97.6
Sep27° / 16°143.2127.4
Oct28° / 18°638.712.16.3
Nov28° / 19°9014.312.25.2
Dec29° / 20°7914.912.35.0

Chance of rain

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

Hedaru gets about 797 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 2.9 months, from around Feb 28 to May 26, peaking in April at about 77% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 16.

April is the wettest month by volume, with 182 mm over about 23 wet days; July is the driest, with 11 mm.

0%10%20%30%40%50%60%70%80%90%JanFebMarAprMayJunJulAugSepOctNovDecdrierwetterdriermostly drysome rainoften wetvery wetApr 9 · 77%Jul 16 · 7%
Rain on a day (%)Rain days
Jan3110
Feb318
Mar5216
Apr7423
May4815
Jun154
Jul83
Aug103
Sep113
Oct289
Nov4714
Dec4815

Monthly rainfall

Over a full year, Hedaru collects about 797 mm of rain across 122 wet days — roughly 66 mm in an average month.

It doesn’t fall evenly. April is the wettest month with 182 mm, while July is the driest at just 11 mm. The three wettest months alone bring about 51% of the year’s total.

050100150200JanFebMarAprMayJunJulAugSepOctNovDec544810218212417111414639079
Rainfall (mm)Rain days
Jan5410
Feb488
Mar10216
Apr18223
May12415
Jun174
Jul113
Aug143
Sep143
Oct639
Nov9014
Dec7915

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Hedaru, 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 17 and lasts for 6.2 months, ending around March 25. The clearest month is December, when the sky is clear, mostly clear, or partly cloudy 59% of the time on average.

The cloudier part of the year begins around March 26 and lasts for 5.7 months, ending around September 16. The cloudiest month is July, when it is overcast or mostly cloudy 70% 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 4 · 59%Jun 22 · 28%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan5743
Feb5743
Mar5149
Apr3664
May3862
Jun3466
Jul3070
Aug3466
Sep4456
Oct5149
Nov5545
Dec5941

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, Hedaru barely changes through the year: days stay near 12 h 18 min of light in every season.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.26:316:45
Feb12.16:396:47
Mar12.06:376:39
Apr11.96:326:26
May11.86:316:19
Jun11.76:366:21
Jul11.86:416:27
Aug11.96:376:28
Sep12.06:236:22
Oct12.16:106:16
Nov12.26:076:20
Dec12.36:176:32

Sunny days

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

Hedaru averages about 6 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 2 and 11 days.

The sunnier stretch runs 4.5 months, from around Nov 10 to Mar 26. The sunniest month is January, with roughly 10 sunny days (mixed).

The greyest month is April, down near 2 sunny days — about 76% fewer than the January peak.

051015JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedJan 2311 daysApr 292 days
Sunny daysSky
Jan11Mixed
Feb9Mixed
Mar9Mixed
Apr2Gloomy
May2Gloomy
Jun3Gloomy
Jul3Gloomy
Aug3Gloomy
Sep5Gloomy
Oct6Gloomy
Nov6Gloomy
Dec9Mixed

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 Hedaru, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 7.5 months, from around October 20 to June 3. The muggiest month is April, when the air feels humid, muggy or worse about 100% of the time.

The most comfortable stretch runs from around June 4 to October 19, and July is the most comfortable month — the air is dry or comfortable 86% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJul 19 · 90%Apr 12 · 0%muggyhumidcomfortabledryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan01053360
Feb11048401
Mar0429661
Apr0015840
May0853380
Jun7474420
Jul16701400
Aug11761300
Sep6702310
Oct23452120
Nov0749450
Dec0441550

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 Hedaru is typically calm, near 6 km/h, and varies little with the seasons.

The windier part of the year lasts 5.7 months, from around Apr 19 to Oct 10. The windiest month is July, averaging about 8 km/h (calm).

The calmer part of the year runs from around Oct 11 to Apr 18, with November the calmest month at about 5 km/h.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmercalmlight breezeJul 10 · 8 km/hNov 22 · 4 km/h
Wind speed (km/h)Feels
Jan5calm
Feb5calm
Mar5calm
Apr6calm
May7calm
Jun8calm
Jul8calm
Aug7calm
Sep7calm
Oct6calm
Nov5calm
Dec5calm

Hazard calendar for Hedaru

In seasonPeak

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

Hedaru's rainy season runs March–May, when most of the year's rain falls.

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

Best time to visit Hedaru

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around early October, Hedaru 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 Hedaru for general outdoor tourist activities is from late May to mid October, with a peak score in the second week of July.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJul 13 · 7.9

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
Jan5.3fair
Feb4.9fair
Mar4.4fair
Apr4.5fair
May5.9good
Jun7.5ideal
Jul7.8ideal
Aug7.6ideal
Sep7.4good
Oct6.3good
Nov5.2fair
Dec5.0fair

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 Hedaru for hot-weather activities is from late May to mid March, with a peak score in the last week of September.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationSep 22 · 7.6

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 Hedaru, 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.

Hedaru packs about the same all year — highs hold near 30°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, Hedaru sees daytime highs around 30°C and nights near 20°C. Pack light clothes and sun protection. Worth having: rain gear. About 8 days see rain.

UV index (midday) in Hedaru 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 Hedaru peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 15Jun 19UV 10
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr15Extreme
May12Extreme
Jun10Extreme
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec13Extreme

Average hourly UV index in Hedaru

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)
Jan8.56.5
Feb8.56.5
Mar86.5
Apr8.56.5
May7.55.5
Jun7.55
Jul7.55.5
Aug7.55.5
Sep86
Oct86.5
Nov86.5
Dec86

Air quality in Hedaru 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 Hedaru is worst in July — around 16 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (October, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodJul 1616 µg/m³Oct 219 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb14Moderate
Mar11Good
Apr10Good
May11Good
Jun14Moderate
Jul16Moderate
Aug13Moderate
Sep11Good
Oct9Good
Nov9Good
Dec13Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Hedaru 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. Hedaru banks about 4,600 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around February.

01,0002,0003,0004,0005,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan451
Feb420
Mar462
Apr402
May359
Jun305
Jul295
Aug317
Sep344
Oct396
Nov411
Dec440

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.

Hedaru receives about 5.4 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.2 and 6.5 kWh/m².

The brighter stretch of the year lasts 6.7 months, from around Sep 10 to Mar 31. The brightest month is February, averaging about 6.5 kWh/m² (intense).

The dimmest month is May, down near 4.3 kWh/m² — roughly 34% less than the February peak.

012345678JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseFeb 76.5 kWhMay 124.2 kWh
Solar energy (kWh/m²)Level
Jan6.2Intense
Feb6.5Intense
Mar5.9Bright
Apr4.8Bright
May4.2Bright
Jun4.5Bright
Jul4.5Bright
Aug4.9Bright
Sep5.5Bright
Oct5.8Bright
Nov5.7Bright
Dec5.9Bright

Where is Hedaru?

Hedaru sits at 4.5°S, 37.9°E, 640 m above sea level, in Tanzania. The nearest listed city is Makuyuni, 34 km away.

LembeniUsangiKorogwe

Topography around Hedaru

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

Within 3 km, the terrain around Hedaru has significant variations in elevation — a maximum elevation change of 416 m around an average of 662 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,658 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,131 m.

The land around Hedaru is covered by cropland (37%) and grassland (32%) within 3 km, shrubs (61%) within 16 km, and shrubs (68%) within 80 km.

3 km
416 m
16 km
1,658 m
80 km
2,131 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
Nearby: Makuyuni 34 km · Mazinde 48 km · Matui 51 km · Same 52 km · Lushoto 53 km · Lembeni 86 km · Usangi 93 km · Korogwe 97 km

Tanzania travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type D / G
230 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$1,319
2025
Happiness
3.9 / 10
World Happiness, 2025
Safe drinking water
31%
of population, 2024
Homicide rate
3.7
per 100k, 2020
Road deaths
31.1
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Low
EF EPI 479
Religion
Christian 63%Muslim 34%folk religion 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 Hedaru (-4.5°, 37.9°, elevation 640 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).