Usa River in Fall
In fall (March, April and May), Usa River sees average daytime highs around 24°C and overnight lows near 15°C, with 338 mm of rain over about 50 wet days across the season. It is the 3rd-warmest season and the wettest season of the year.
Over the season highs ease from about 27°C in early March to 22°C by late May. The sky is clear or mostly clear about 11% of the time across fall, and the air most often feels comfortable.
Fall is Usa River's weakest 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
- 24°C
- 3rd-warmest season
- Avg overnight low
- 15°C
- Rainfall
- 338 mm
- 50 wet days
- Avg wind
- 6 km/h
- Travel score
- 5.6
- weakest season of the year
- Months
- Mar · Apr · May
Temperature in Usa River in Fall
Over the season highs ease from about 27°C in early March to 22°C by late May.
A typical fall day in Usa River reaches about 24°C and drops to 15°C overnight. The warmest of the three months is March, the coolest May.
Usa River weather by month
How the three fall months (March, April and May) 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 Fall
The sky is clear or mostly clear about 11% of the time across fall.
Chance of precipitation in Fall
Usa River gets around 338 mm of rain over 50 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 6 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 06 min in early March to 11 h 48 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 5.1 kWh/m².
Hazard calendar for Usa River
In fall, Usa River overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Usa River's rainy season runs November–April, when most of the year's rain falls.
Is fall a good time to visit Usa River?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Usa River for sightseeing.
What to pack for Usa River in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Usa River sees daytime highs around 24°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 50 days see rain.
UV index in Usa River in Fall
Clear-sky midday UV across fall averages around 14 (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 Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall 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.