Usa River weather in August

In August, Usa River sees average daytime highs of 22°C and overnight lows near 11°C, with 4 mm of rain across 1.1 wet days and about 11.9 hours of daylight. It is the 10th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 22°C through the month. The sky is clear or mostly clear about 16% of the time in August, and the air most often feels dry.

Daylight stretches from about 11 h 54 min at the start of August to 11 h 54 min by month's end. Set against the rest of the year, August is Usa River's 6th-clearest and 1st-windiest month. For the whole year in context, see Usa River's year-round climate.

Daytime high: 22°; 10th warmest
Overnight low: 11°; 2nd coldest
Rainfall: 4 mm; 1.1 wet days
Daylight: 11 h 54 min; 6:40 AM – 6:33 PM
Cloud cover: 64%; 6th clearest
Wind: 8 km/h; 1st windiest
Solar energy: 5.22 kWh/m²
Travel score: 7.8; out of 10

Usa River is human settlement in Tanzania.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← July Usa River year-round climate September →Best places to visit in August

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 22°C through the month.

A typical August day in Usa River reaches about 22°C in the afternoon and slips back to 11°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 24°C. Set against its neighbours, August runs about 1°C warmer than July and about 2°C cooler than September.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	21	21	21	21	21	21	21	21	21	21	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	23	23	23
Avg low (°C)	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	11	12	12	12	12	12

	Avg high (°C)	Avg low (°C)
1	21	11
2	21	11
3	21	11
4	21	11
5	21	11
6	21	11
7	21	11
8	21	11
9	21	11
10	21	11
11	22	11
12	22	11
13	22	11
14	22	11
15	22	11
16	22	11
17	22	11
18	22	11
19	22	11
20	22	11
21	22	11
22	22	11
23	22	11
24	22	11
25	22	11
26	22	11
27	22	12
28	22	12
29	23	12
30	23	12
31	23	12

Usa River weather by month

How August compares with the rest of the year at a glance. August is the 10th-warmest and 12th-wettest month here — the current month is highlighted below.

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 August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 21% of August, with mostly cloudy or overcast conditions the remaining 62%. Skies tend to open up as the month goes on.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	34	34	33	33	32	32	32	32	32	33	33	34	34	35	37	38	39	39	39	41	41	41	41	42	44	44	44	44	44	45	45
Cloudier (%)	66	66	67	67	68	68	68	68	68	67	67	66	66	65	63	62	61	61	61	59	59	59	59	58	56	56	56	56	56	55	55

	Clearer (%)	Cloudier (%)
1	34	66
2	34	66
3	33	67
4	33	67
5	32	68
6	32	68
7	32	68
8	32	68
9	32	68
10	33	67
11	33	67
12	34	66
13	34	66
14	35	65
15	37	63
16	38	62
17	39	61
18	39	61
19	39	61
20	41	59
21	41	59
22	41	59
23	41	59
24	42	58
25	44	56
26	44	56
27	44	56
28	44	56
29	44	56
30	45	55
31	45	55

Chance of precipitation in August

Any precipitation

Usa River gets around 4 mm of rain over 1.1 wet days in August, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 4% and peaks near 4% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4

	Rain chance (%)
1	4
2	4
3	4
4	4
5	4
6	4
7	4
8	4
9	4
10	4
11	4
12	4
13	4
14	4
15	4
16	4
17	4
18	4
19	4
20	4
21	4
22	4
23	4
24	4
25	4
26	4
27	4
28	4
29	4
30	4
31	4

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the dry band about 93% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	93	93	93	93	93	93	93	93	93	93	93	92	92	92	92	92	92	92	92	92	92	92	92	92	92	93	93	93	93	93	93
Comfortable (%)	7	7	7	7	7	7	7	7	7	7	7	8	8	8	8	8	8	8	8	8	8	8	8	8	8	7	7	7	7	7	7

	Dry (%)	Comfortable (%)
1	93	7
2	93	7
3	93	7
4	93	7
5	93	7
6	93	7
7	93	7
8	93	7
9	93	7
10	93	7
11	93	7
12	92	8
13	92	8
14	92	8
15	92	8
16	92	8
17	92	8
18	92	8
19	92	8
20	92	8
21	92	8
22	92	8
23	92	8
24	92	8
25	92	8
26	93	7
27	93	7
28	93	7
29	93	7
30	93	7
31	93	7

Wind in August

Winds average 8 km/h in August, the windiest month of the year.

Across August, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	8	calm
2	8	calm
3	8	calm
4	8	calm
5	8	calm
6	8	calm
7	8	calm
8	8	calm
9	8	calm
10	8	calm
11	8	calm
12	8	calm
13	8	calm
14	8	calm
15	8	calm
16	8	calm
17	8	calm
18	8	calm
19	8	calm
20	8	calm
21	8	calm
22	8	calm
23	8	calm
24	8	calm
25	8	calm
26	8	calm
27	8	calm
28	8	calm
29	8	calm
30	8	calm
31	8	calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 h 54 min at the start of August to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over August. Sunrise moves from 6:43 AM to 6:35 AM, and sunset from 6:34 PM to 6:31 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9	11.9
Sunrise (AM)	6:43	6:43	6:43	6:43	6:43	6:42	6:42	6:42	6:42	6:42	6:41	6:41	6:41	6:41	6:40	6:40	6:40	6:39	6:39	6:39	6:38	6:38	6:38	6:37	6:37	6:37	6:36	6:36	6:35	6:35	6:35
Sunset (PM)	6:34	6:34	6:34	6:34	6:34	6:34	6:34	6:34	6:34	6:34	6:34	6:34	6:34	6:34	6:33	6:33	6:33	6:33	6:33	6:33	6:33	6:32	6:32	6:32	6:32	6:32	6:31	6:31	6:31	6:31	6:31

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.9	6:43	6:34
2	11.9	6:43	6:34
3	11.9	6:43	6:34
4	11.9	6:43	6:34
5	11.9	6:43	6:34
6	11.9	6:42	6:34
7	11.9	6:42	6:34
8	11.9	6:42	6:34
9	11.9	6:42	6:34
10	11.9	6:42	6:34
11	11.9	6:41	6:34
12	11.9	6:41	6:34
13	11.9	6:41	6:34
14	11.9	6:41	6:34
15	11.9	6:40	6:33
16	11.9	6:40	6:33
17	11.9	6:40	6:33
18	11.9	6:39	6:33
19	11.9	6:39	6:33
20	11.9	6:39	6:33
21	11.9	6:38	6:33
22	11.9	6:38	6:32
23	11.9	6:38	6:32
24	11.9	6:37	6:32
25	11.9	6:37	6:32
26	11.9	6:37	6:32
27	11.9	6:36	6:31
28	11.9	6:36	6:31
29	11.9	6:35	6:31
30	11.9	6:35	6:31
31	11.9	6:35	6:31

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.22 kWh/m².

For context, solar energy here swings from a low near 4.54 kWh/m² to a high of 6.33 kWh/m² in February across the year — August's 5.22 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	4.9	4.9	4.9	5.0	5.0	5.0	5.0	5.0	5.0	5.1	5.1	5.1	5.1	5.2	5.2	5.2	5.3	5.3	5.3	5.3	5.4	5.4	5.4	5.4	5.4	5.5	5.5	5.5	5.5	5.5	5.5
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	4.9	Bright
2	4.9	Bright
3	4.9	Bright
4	5.0	Bright
5	5.0	Bright
6	5.0	Bright
7	5.0	Bright
8	5.0	Bright
9	5.0	Bright
10	5.1	Bright
11	5.1	Bright
12	5.1	Bright
13	5.1	Bright
14	5.2	Bright
15	5.2	Bright
16	5.2	Bright
17	5.3	Bright
18	5.3	Bright
19	5.3	Bright
20	5.3	Bright
21	5.4	Bright
22	5.4	Bright
23	5.4	Bright
24	5.4	Bright
25	5.4	Bright
26	5.5	Bright
27	5.5	Bright
28	5.5	Bright
29	5.5	Bright
30	5.5	Bright
31	5.5	Bright

Planning a trip in August

Hazard calendar for Usa River

In seasonPeak

None of Usa River's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Usa River'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 August a good time to visit Usa River?

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

7.8

Sightseeing

2nd-best month of the year

5.3

Beach & pool

6th-best month of the year

August is one of the better times to visit Usa River for general sightseeing.

What to pack for Usa River in August

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

In August, Usa River sees daytime highs around 22°C and nights near 11°C. Worth packing: sun protection.

sun protection

UV index in Usa River in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks 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 August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August 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

Location & terrain

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.

3 km

250 m

trees 62%

16 km

3,134 m

trees 48%

80 km

5,168 m

grassland 39%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwater

← July Usa River year-round climate September →Best places to visit in August

August weather nearby: Kingori 17 km · Arusha 19 km · Mbuguni 25 km · Merelani 26 km · Boma la Ngombe 34 km · Moshi 54 km · Makuyuni 86 km · Tarakea 89 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. 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).

	Avg high (°C)	Avg low (°C)
1	21	11
2	21	11
3	21	11
4	21	11
5	21	11
6	21	11
7	21	11
8	21	11
9	21	11
10	21	11
11	22	11
12	22	11
13	22	11
14	22	11
15	22	11
16	22	11
17	22	11
18	22	11
19	22	11
20	22	11
21	22	11
22	22	11
23	22	11
24	22	11
25	22	11
26	22	11
27	22	12
28	22	12
29	23	12
30	23	12
31	23	12

	Clearer (%)	Cloudier (%)
1	34	66
2	34	66
3	33	67
4	33	67
5	32	68
6	32	68
7	32	68
8	32	68
9	32	68
10	33	67
11	33	67
12	34	66
13	34	66
14	35	65
15	37	63
16	38	62
17	39	61
18	39	61
19	39	61
20	41	59
21	41	59
22	41	59
23	41	59
24	42	58
25	44	56
26	44	56
27	44	56
28	44	56
29	44	56
30	45	55
31	45	55

	Rain chance (%)
1	4
2	4
3	4
4	4
5	4
6	4
7	4
8	4
9	4
10	4
11	4
12	4
13	4
14	4
15	4
16	4
17	4
18	4
19	4
20	4
21	4
22	4
23	4
24	4
25	4
26	4
27	4
28	4
29	4
30	4
31	4

	Dry (%)	Comfortable (%)
1	93	7
2	93	7
3	93	7
4	93	7
5	93	7
6	93	7
7	93	7
8	93	7
9	93	7
10	93	7
11	93	7
12	92	8
13	92	8
14	92	8
15	92	8
16	92	8
17	92	8
18	92	8
19	92	8
20	92	8
21	92	8
22	92	8
23	92	8
24	92	8
25	92	8
26	93	7
27	93	7
28	93	7
29	93	7
30	93	7
31	93	7

	Avg high (°C)	Avg low (°C)
1	21	11
2	21	11
3	21	11
4	21	11
5	21	11
6	21	11
7	21	11
8	21	11
9	21	11
10	21	11
11	22	11
12	22	11
13	22	11
14	22	11
15	22	11
16	22	11
17	22	11
18	22	11
19	22	11
20	22	11
21	22	11
22	22	11
23	22	11
24	22	11
25	22	11
26	22	11
27	22	12
28	22	12
29	23	12
30	23	12
31	23	12

	Clearer (%)	Cloudier (%)
1	34	66
2	34	66
3	33	67
4	33	67
5	32	68
6	32	68
7	32	68
8	32	68
9	32	68
10	33	67
11	33	67
12	34	66
13	34	66
14	35	65
15	37	63
16	38	62
17	39	61
18	39	61
19	39	61
20	41	59
21	41	59
22	41	59
23	41	59
24	42	58
25	44	56
26	44	56
27	44	56
28	44	56
29	44	56
30	45	55
31	45	55

	Rain chance (%)
1	4
2	4
3	4
4	4
5	4
6	4
7	4
8	4
9	4
10	4
11	4
12	4
13	4
14	4
15	4
16	4
17	4
18	4
19	4
20	4
21	4
22	4
23	4
24	4
25	4
26	4
27	4
28	4
29	4
30	4
31	4

	Dry (%)	Comfortable (%)
1	93	7
2	93	7
3	93	7
4	93	7
5	93	7
6	93	7
7	93	7
8	93	7
9	93	7
10	93	7
11	93	7
12	92	8
13	92	8
14	92	8
15	92	8
16	92	8
17	92	8
18	92	8
19	92	8
20	92	8
21	92	8
22	92	8
23	92	8
24	92	8
25	92	8
26	93	7
27	93	7
28	93	7
29	93	7
30	93	7
31	93	7

	Avg high (°C)	Avg low (°C)
1	21	11
2	21	11
3	21	11
4	21	11
5	21	11
6	21	11
7	21	11
8	21	11
9	21	11
10	21	11
11	22	11
12	22	11
13	22	11
14	22	11
15	22	11
16	22	11
17	22	11
18	22	11
19	22	11
20	22	11
21	22	11
22	22	11
23	22	11
24	22	11
25	22	11
26	22	11
27	22	12
28	22	12
29	23	12
30	23	12
31	23	12

	Clearer (%)	Cloudier (%)
1	34	66
2	34	66
3	33	67
4	33	67
5	32	68
6	32	68
7	32	68
8	32	68
9	32	68
10	33	67
11	33	67
12	34	66
13	34	66
14	35	65
15	37	63
16	38	62
17	39	61
18	39	61
19	39	61
20	41	59
21	41	59
22	41	59
23	41	59
24	42	58
25	44	56
26	44	56
27	44	56
28	44	56
29	44	56
30	45	55
31	45	55

	Rain chance (%)
1	4
2	4
3	4
4	4
5	4
6	4
7	4
8	4
9	4
10	4
11	4
12	4
13	4
14	4
15	4
16	4
17	4
18	4
19	4
20	4
21	4
22	4
23	4
24	4
25	4
26	4
27	4
28	4
29	4
30	4
31	4

	Dry (%)	Comfortable (%)
1	93	7
2	93	7
3	93	7
4	93	7
5	93	7
6	93	7
7	93	7
8	93	7
9	93	7
10	93	7
11	93	7
12	92	8
13	92	8
14	92	8
15	92	8
16	92	8
17	92	8
18	92	8
19	92	8
20	92	8
21	92	8
22	92	8
23	92	8
24	92	8
25	92	8
26	93	7
27	93	7
28	93	7
29	93	7
30	93	7
31	93	7