Geiro weather in January

In January, Geiro sees average daytime highs of 26°C and overnight lows near 18°C, with 199 mm of rain across 20.8 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 14% of the time in January, and the air most often feels humid.

Daylight stretches from about 12 h 24 min at the start of January to 12 h 18 min by month's end. Set against the rest of the year, January is Geiro's 11th-clearest and 12th-windiest month. For the whole year in context, see Geiro's year-round climate.

Daytime high
26°
4th warmest
Overnight low
18°
11th coldest
Rainfall
199 mm
20.8 wet days
Daylight
12 h 18 min
6:32 AM – 6:51 PM
Cloud cover
71%
11th clearest
Wind
7 km/h
12th windiest
Solar energy
5.97 kWh/m²
Travel score
5.0
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical January day in Geiro reaches about 26°C in the afternoon and slips back to 18°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 28°C. Set against its neighbours, January runs on par with December and on par with February.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12618
22618
32618
42618
52618
62618
72618
82618
92618
102618
112618
122618
132618
142618
152618
162618
172618
182618
192618
202618
212618
222617
232617
242617
252617
262617
272617
282617
292617
302617
312617

Geiro weather by month

How January compares with the rest of the year at a glance. January is the 4th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 18°19920.812.35.0
Feb26° / 17°16316.812.25.2
Mar26° / 18°16922.5124.8
Apr24° / 17°11623.711.94.6
May23° / 16°5715.811.76.0
Jun22° / 14°176.711.77.2
Jul22° / 13°124.711.77.4
Aug23° / 13°166.211.87.4
Sep24° / 14°113.9128.0
Oct26° / 15°267.712.17.3
Nov26° / 17°6612.412.36.3
Dec26° / 18°16018.912.45.3

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 20% of January, with mostly cloudy or overcast conditions the remaining 67%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13664
23763
33664
43664
53664
63466
73466
83466
93268
103268
113367
123268
133367
143268
153268
163367
173367
183268
193268
203367
213367
223367
233367
243367
253367
263367
273367
283466
293367
303367
313367

Chance of precipitation in January

Any precipitation

Geiro gets around 199 mm of rain over 20.8 wet days in January, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 66% and peaks near 70% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
168
268
368
468
568
669
769
870
970
1070
1170
1270
1370
1469
1569
1668
1768
1867
1966
2065
2165
2264
2363
2463
2562
2662
2761
2861
2960
3060
3160

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the humid band about 75% of days. Sticky, muggy-or-worse air turns up on roughly 16% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)
1107812
2107812
397813
497813
597813
697714
797714
897615
987715
1087715
1187616
1287616
1387616
1487616
1587616
1677617
1777617
1877617
1977617
2087517
2187517
2287418
2397318
2497318
25107218
26107218
27117118
28117118
29127018
30127018
31136918

Wind in January

Winds average 7 km/h in January, the calmest month.

Across January, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 12 h 24 min at the start of January to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over January. Sunrise moves from 6:25 AM to 6:38 AM, and sunset from 6:46 PM to 6:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:256:46
212.36:266:47
312.36:266:47
412.36:276:47
512.36:276:48
612.36:286:48
712.36:286:49
812.36:296:49
912.36:296:49
1012.36:296:50
1112.36:306:50
1212.36:306:50
1312.36:316:51
1412.36:316:51
1512.36:326:51
1612.36:326:51
1712.36:336:52
1812.36:336:52
1912.36:336:52
2012.36:346:52
2112.36:346:53
2212.36:356:53
2312.36:356:53
2412.36:356:53
2512.36:366:53
2612.36:366:53
2712.36:366:54
2812.36:376:54
2912.36:376:54
3012.36:376:54
3112.36:386:54

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.97 kWh/m².

For context, solar energy here swings from a low near 4.93 kWh/m² to a high of 6.66 kWh/m² in October across the year — January's 5.97 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.9Bright
95.9Bright
105.9Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
176.0Bright
186.0Bright
196.0Bright
206.0Intense
216.0Intense
226.0Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.2Intense
306.2Intense
316.2Intense
Planning a trip in January

Hazard calendar for Geiro

In seasonPeak

In January, Geiro sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Geiro's monsoon runs December–April, when most of the year's rain falls.

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

Is January a good time to visit Geiro?

Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.0
Sightseeing
10th-best month of the year
4.8
Beach & pool
9th-best month of the year

January is a reasonable time to visit Geiro for sightseeing.

What to pack for Geiro in January

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

In January, Geiro sees daytime highs around 26°C and nights near 18°C. Pack rain gear. Worth having: light clothes and sun protection. About 21 days see rain.

rain gearlight clothessun protection

UV index in Geiro in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Geiro peaks around March 11 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 11UV 16Jun 17UV 10
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar16Extreme
Apr15Extreme
May11Extreme
Jun10Extreme
Jul11Extreme
Aug11Extreme
Sep14Extreme
Oct14Extreme
Nov13Extreme
Dec13Extreme
Location & terrain

Where is Geiro?

Geiro sits at 6.2°S, 36.9°E, 1,284 m above sea level, in Tanzania. The nearest listed city is Kibaigwa, 26 km away.

KilosaKibakwe

Topography around Geiro

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

Within 3 km, the terrain around Geiro has significant variations in elevation — a maximum elevation change of 458 m around an average of 1,295 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 845 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,016 m.

The land around Geiro is covered by cropland (69%) within 3 km, cropland (71%) within 16 km, and cropland (36%), trees (26%) and shrubs (25%) within 80 km.

3 km
458 m
16 km
845 m
80 km
2,016 m
treesshrubsgrasslandcroplandartificial surfaces
January weather nearby: Kibaigwa 26 km · Mpwapwa 48 km · Msowero 56 km · Dumila 59 km · Magole 61 km · Lubata 65 km · Kilosa 77 km · Kibakwe 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
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 Geiro (-6.15°, 36.8667°, elevation 1,284 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).