Isaka in Spring

In spring (September, October and November), Isaka sees average daytime highs around 31°C and overnight lows near 20°C, with 136 mm of rain over about 20 wet days across the season. It is the warmest season of the year and the 3rd-wettest season.

Over the season highs ease from about 31°C in early September to 29°C by late November. The sky is clear or mostly clear about 30% of the time across spring, and the air most often feels dry.

Spring is Isaka's weakest season of the year to visit on our travel score. For the whole year in context, see Isaka's year-round climate.

Avg daytime high: 31°C; warmest season of the year
Avg overnight low: 20°C
Rainfall: 136 mm; 20 wet days
Avg wind: 10 km/h
Travel score: 4.7; weakest season of the year
Months: Sep · Oct · Nov

← Winter Isaka year-round climate Summer →

Spring Summer Fall Winter

Temperature in Isaka in Spring

Average highAverage lowShaded bands: 10–90% of days

Over the season highs ease from about 31°C in early September to 29°C by late November.

A typical spring day in Isaka reaches about 31°C and drops to 20°C overnight. The warmest of the three months is October, the coolest November.

How spring really feels in Isaka

Once humidity and wind are folded in, spring brings about 17 days that feel above 32°C and 0 that feel at or below 0°C.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

The story in spring is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Isaka weather by month

How the three spring months (September, October and November) compare with the rest of the year — the season's months are highlighted.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	28° / 19°	119	18.1	12.2	4.9
Feb	29° / 19°	93	14.5	12.1	4.7
Mar	29° / 19°	118	16.4	12	4.7
Apr	28° / 19°	98	13.5	11.9	5.2
May	29° / 19°	20	3.9	11.8	6.2
Jun	29° / 19°	2	0.4	11.8	6.5
Jul	29° / 18°	0	0.1	11.8	6.9
Aug	30° / 19°	3	0.6	11.9	6.1
Sep	32° / 20°	7	1.3	12	5.2
Oct	32° / 20°	27	5.1	12.1	4.5
Nov	30° / 20°	103	13.3	12.2	4.5
Dec	28° / 19°	130	18.5	12.2	4.8

Cloud cover in Spring

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time across spring.

Chance of precipitation in Spring

Any precipitation

Isaka gets around 136 mm of rain over 20 wet days across spring. The line is the day-by-day chance of measurable precipitation.

Humidity in Spring

DryComfortableHumidMuggyOppressiveMiserable

Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

Wind in Spring

Winds average 10 km/h across spring.

Sunrise & sunset in Spring

DaylightNight

Daylight runs from about 11 h 54 min in early September to 12 h 12 min by late November. The lit band spans sunrise to sunset each day.

Solar energy in Spring

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across spring, about 6.6 kWh/m².

Planning a trip in spring

Hazard calendar for Isaka

In seasonPeak

In spring, Isaka overlaps its rainy season season. The full year is below, with each hazard's peak months called out.

Isaka's rainy season runs November–April, when most of the year's rain falls.

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is spring a good time to visit Isaka?

Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.

4.7

Sightseeing

4th-best month of the year

7.1

Beach & pool

2nd-best month of the year

spring is a reasonable time to visit Isaka for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Isaka in Spring

From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In spring, Isaka sees daytime highs around 31°C and nights near 20°C. Pack light clothes and sun protection. Worth having: rain gear. About 20 days see rain.

light clothessun protectionrain gear

UV index in Isaka in Spring

LowModerateHighVery highExtreme

Clear-sky midday UV across spring averages around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Isaka peaks around March 10 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 17 at about 10 (extreme).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	13	16	16	15	12	10	11	11	13	14	13	13
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	13	Extreme
Feb	16	Extreme
Mar	16	Extreme
Apr	15	Extreme
May	12	Extreme
Jun	10	Extreme
Jul	11	Extreme
Aug	11	Extreme
Sep	13	Extreme
Oct	14	Extreme
Nov	13	Extreme
Dec	13	Extreme

Air quality in Isaka in Spring

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.

Air quality in Isaka is worst in January — around 17 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (May, 8 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	17	15	12	10	8	8	10	11	11	10	11	13
Level	Moderate	Moderate	Moderate	Good	Good	Good	Good	Good	Good	Good	Good	Moderate

	PM2.5 (µg/m³)	Level
Jan	17	Moderate
Feb	15	Moderate
Mar	12	Moderate
Apr	10	Good
May	8	Good
Jun	8	Good
Jul	10	Good
Aug	11	Good
Sep	11	Good
Oct	10	Good
Nov	11	Good
Dec	13	Moderate

Location & terrain

Where is Isaka?

Isaka sits at 3.9°S, 32.9°E, 1,201 m above sea level, in Tanzania. The nearest listed city is Tinde, 30 km away.

Topography around Isaka

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

Within 3 km, the terrain around Isaka has only modest variations in elevation — a maximum elevation change of 34 m around an average of 1,187 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 228 m; within 80 km, significant variations in elevation — a maximum elevation change of 502 m.

The land around Isaka is covered by cropland (85%) within 3 km, cropland (86%) within 16 km, and cropland (75%) within 80 km.

3 km

34 m

cropland 85%

16 km

228 m

cropland 86%

80 km

502 m

cropland 75%

treesshrubsgrasslandcroplandartificial surfaces

← Winter Isaka year-round climate Summer →

Spring weather nearby: Tinde 30 km · Kahama 38 km · Nzega 45 km · Shinyanga 60 km · Old Shinyanga 65 km · Mhango 69 km · Songwa 78 km · Mwadui 84 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

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 Isaka (-3.9°, 32.9333°, elevation 1,201 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.