Usa River in Winter
In winter (June, July and August), Usa River sees average daytime highs around 21°C and overnight lows near 11°C, with 14 mm of rain over about 5 wet days across the season. It is the coldest season of the year and the driest season of the year.
Across winter, daytime highs hold fairly steady around 21°C. The sky is clear or mostly clear about 12% of the time across winter, and the air most often feels dry.
Winter is Usa River's best season of the year to visit on our travel score. For the whole year in context, see Usa River's year-round climate.
- Avg daytime high
- 21°C
- coldest season of the year
- Avg overnight low
- 11°C
- Rainfall
- 14 mm
- 5 wet days
- Avg wind
- 8 km/h
- Travel score
- 7.5
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Usa River in Winter
Across winter, daytime highs hold fairly steady around 21°C.
A typical winter day in Usa River reaches about 21°C and drops to 11°C overnight. The warmest of the three months is August, the coolest July.
Usa River weather by month
How the three winter months (June, July and August) 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 | 26° / 15° | 82 | 10.6 | 12.2 | 6.6 |
| Feb | 27° / 15° | 73 | 8.9 | 12.1 | 6.5 |
| Mar | 26° / 16° | 143 | 16.7 | 12 | 5.6 |
| Apr | 24° / 16° | 145 | 21.7 | 11.9 | 4.9 |
| May | 22° / 14° | 50 | 11.9 | 11.8 | 6.2 |
| Jun | 21° / 12° | 7 | 2.3 | 11.8 | 7.3 |
| Jul | 21° / 11° | 4 | 1.1 | 11.8 | 7.5 |
| Aug | 22° / 11° | 4 | 1.1 | 11.9 | 7.8 |
| Sep | 24° / 12° | 4 | 1.1 | 12 | 8.3 |
| Oct | 25° / 14° | 30 | 7.3 | 12.1 | 7.2 |
| Nov | 25° / 15° | 103 | 17.7 | 12.2 | 5.6 |
| Dec | 25° / 15° | 108 | 16.7 | 12.2 | 5.7 |
Cloud cover in Winter
The sky is clear or mostly clear about 12% of the time across winter.
Chance of precipitation in Winter
Usa River gets around 14 mm of rain over 5 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 8 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 11 h 48 min in early June to 11 h 54 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 4.8 kWh/m².
Hazard calendar for Usa River
None of Usa River's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Usa River's rainy season runs November–April, when most of the year's rain falls.
Is winter a good time to visit Usa River?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is one of the better times to visit Usa River for general sightseeing.
What to pack for Usa River in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Usa River sees daytime highs around 21°C and nights near 11°C. Worth packing: sun protection. About 5 days see rain.
UV index in Usa River in Winter
Clear-sky midday UV across winter averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Usa River peaks around March 14 at about 16 (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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 15 | 16 | 16 | 15 | 12 | 10 | 11 | 11 | 14 | 14 | 14 | 13 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 16 | Extreme |
| Mar | 16 | Extreme |
| Apr | 15 | Extreme |
| May | 12 | Extreme |
| Jun | 10 | Extreme |
| Jul | 11 | Extreme |
| Aug | 11 | Extreme |
| Sep | 14 | Extreme |
| Oct | 14 | Extreme |
| Nov | 14 | Extreme |
| Dec | 13 | Extreme |
Air quality in Usa River in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Usa River is worst in June — around 16 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (November, 10 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) | 14 | 13 | 13 | 12 | 13 | 16 | 16 | 13 | 12 | 11 | 10 | 13 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 14 | Moderate |
| Feb | 13 | Moderate |
| Mar | 13 | Moderate |
| Apr | 12 | Moderate |
| May | 13 | Moderate |
| Jun | 16 | Moderate |
| Jul | 16 | Moderate |
| Aug | 13 | Moderate |
| Sep | 12 | Good |
| Oct | 11 | Good |
| Nov | 10 | Good |
| Dec | 13 | Moderate |
Where is Usa River?
Usa River sits at 3.4°S, 36.9°E, 1,197 m above sea level, in Tanzania. The nearest listed city is Kingori, 17 km away.
Topography around Usa River
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Usa River.
Within 3 km, the terrain around Usa River has significant variations in elevation — a maximum elevation change of 250 m around an average of 1,201 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 3,134 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,168 m.
The land around Usa River is covered by trees (62%) within 3 km, trees (48%) and cropland (23%) within 16 km, and grassland (39%) and shrubs (31%) within 80 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 Usa River (-3.3667°, 36.85°, elevation 1,197 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.