Zwedru weather in September

In September, Zwedru sees average daytime highs of 29°C and overnight lows near 22°C, with 238 mm of rain across 27.1 wet days and about 12 hours of daylight. It is the 9th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 0% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Zwedru's 8th-clearest and 4th-windiest month. For the whole year in context, see Zwedru's year-round climate.

Daytime high: 29°; 9th warmest
Overnight low: 22°; 8th coldest
Rainfall: 238 mm; 27.1 wet days
Daylight: 12 hours; 6:26 AM – 6:28 PM
Cloud cover: 82%; 8th clearest
Wind: 7 km/h; 4th windiest
Solar energy: 3.95 kWh/m²
Travel score: 3.2; out of 10

Zwedru is human settlement in Liberia.

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

← August Zwedru year-round climate October →Best places to visit in September

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical September day in Zwedru reaches about 29°C in the afternoon and slips back to 22°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

	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
Avg high (°C)	28	28	28	28	28	28	28	28	28	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29
Avg low (°C)	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22

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

How September really feels in Zwedru

Once humidity and wind are folded in, September averages 13 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

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 September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Zwedru weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 1st-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	31° / 22°	32	7.8	11.7	4.8
Feb	31° / 22°	63	12.4	11.8	3.8
Mar	31° / 23°	133	22.7	12	3.0
Apr	31° / 23°	158	23.8	12.1	2.9
May	30° / 23°	190	26.8	12.3	2.9
Jun	29° / 22°	200	25.3	12.3	3.4
Jul	28° / 22°	122	21.4	12.3	4.4
Aug	28° / 22°	152	22.8	12.2	4.2
Sep	29° / 22°	238	27.1	12	3.2
Oct	30° / 22°	187	27.2	11.9	3.1
Nov	30° / 22°	80	18.3	11.7	3.8
Dec	30° / 21°	36	9.4	11.7	5.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 9% of September, with mostly cloudy or overcast conditions the remaining 91%.

	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
Clearer (%)	6	7	7	7	7	8	8	8	8	8	8	8	9	9	9	9	9	9	9	9	9	9	9	10	10	10	10	10	10	10
Cloudier (%)	94	93	93	93	93	92	92	92	92	92	92	92	91	91	91	91	91	91	91	91	91	91	91	90	90	90	90	90	90	90

	Clearer (%)	Cloudier (%)
1	6	94
2	7	93
3	7	93
4	7	93
5	7	93
6	8	92
7	8	92
8	8	92
9	8	92
10	8	92
11	8	92
12	8	92
13	9	91
14	9	91
15	9	91
16	9	91
17	9	91
18	9	91
19	9	91
20	9	91
21	9	91
22	9	91
23	9	91
24	10	90
25	10	90
26	10	90
27	10	90
28	10	90
29	10	90
30	10	90

Chance of precipitation in September

Any precipitation

Zwedru gets around 238 mm of rain over 27.1 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 90% and peaks near 92% 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
Rain chance (%)	87	87	88	88	88	89	89	90	90	90	91	91	91	91	91	91	92	92	92	92	92	92	92	91	91	91	91	91	91	91

	Rain chance (%)
1	87
2	87
3	88
4	88
5	88
6	89
7	89
8	90
9	90
10	90
11	91
12	91
13	91
14	91
15	91
16	91
17	92
18	92
19	92
20	92
21	92
22	92
23	92
24	91
25	91
26	91
27	91
28	91
29	91
30	91

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 96% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

	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
Muggy (%)	9	9	8	8	7	7	7	6	6	6	5	5	5	4	4	4	3	3	3	3	2	2	2	2	2	2	2	2	2	2
Oppressive (%)	91	91	92	92	93	93	93	94	94	94	95	95	95	96	96	96	97	97	97	97	98	98	98	98	98	98	98	98	98	98

	Muggy (%)	Oppressive (%)
1	9	91
2	9	91
3	8	92
4	8	92
5	7	93
6	7	93
7	7	93
8	6	94
9	6	94
10	6	94
11	5	95
12	5	95
13	5	95
14	4	96
15	4	96
16	4	96
17	3	97
18	3	97
19	3	97
20	3	97
21	2	98
22	2	98
23	2	98
24	2	98
25	2	98
26	2	98
27	2	98
28	2	98
29	2	98
30	2	98

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 6 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
Wind speed (km/h)	8	8	8	8	8	8	8	7	7	7	7	7	7	7	7	7	7	7	7	7	6	6	6	6	6	6	6	6	6	6
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

	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	7	calm
9	7	calm
10	7	calm
11	7	calm
12	7	calm
13	7	calm
14	7	calm
15	7	calm
16	7	calm
17	7	calm
18	7	calm
19	7	calm
20	7	calm
21	6	calm
22	6	calm
23	6	calm
24	6	calm
25	6	calm
26	6	calm
27	6	calm
28	6	calm
29	6	calm
30	6	calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 06 min at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over September. Sunrise moves from 6:29 AM to 6:23 AM, and sunset from 6:36 PM to 6:20 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
Daylight (h)	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0
Sunrise (AM)	6:29	6:29	6:28	6:28	6:28	6:28	6:28	6:27	6:27	6:27	6:27	6:27	6:26	6:26	6:26	6:26	6:26	6:25	6:25	6:25	6:25	6:25	6:24	6:24	6:24	6:24	6:24	6:24	6:23	6:23
Sunset (PM)	6:36	6:35	6:35	6:34	6:34	6:33	6:33	6:32	6:32	6:31	6:31	6:30	6:29	6:29	6:28	6:28	6:27	6:27	6:26	6:26	6:25	6:25	6:24	6:24	6:23	6:22	6:22	6:21	6:21	6:20

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.1	6:29	6:36
2	12.1	6:29	6:35
3	12.1	6:28	6:35
4	12.1	6:28	6:34
5	12.1	6:28	6:34
6	12.1	6:28	6:33
7	12.1	6:28	6:33
8	12.1	6:27	6:32
9	12.1	6:27	6:32
10	12.1	6:27	6:31
11	12.1	6:27	6:31
12	12.1	6:27	6:30
13	12.0	6:26	6:29
14	12.0	6:26	6:29
15	12.0	6:26	6:28
16	12.0	6:26	6:28
17	12.0	6:26	6:27
18	12.0	6:25	6:27
19	12.0	6:25	6:26
20	12.0	6:25	6:26
21	12.0	6:25	6:25
22	12.0	6:25	6:25
23	12.0	6:24	6:24
24	12.0	6:24	6:24
25	12.0	6:24	6:23
26	12.0	6:24	6:22
27	12.0	6:24	6:22
28	12.0	6:24	6:21
29	12.0	6:23	6:21
30	12.0	6:23	6:20

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.95 kWh/m².

For context, solar energy here swings from a low near 3.59 kWh/m² to a high of 4.92 kWh/m² in April across the year — September's 3.95 kWh/m² sits near the bottom.

	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
Solar energy (kWh/m²)	3.7	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.9	3.9	3.9	3.9	3.9	3.9	4.0	4.0	4.0	4.0	4.0	4.0	4.1	4.1	4.1	4.1	4.2	4.2	4.2	4.2	4.2
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	3.7	Moderate
2	3.8	Moderate
3	3.8	Moderate
4	3.8	Moderate
5	3.8	Moderate
6	3.8	Moderate
7	3.8	Moderate
8	3.8	Moderate
9	3.8	Moderate
10	3.9	Moderate
11	3.9	Moderate
12	3.9	Moderate
13	3.9	Moderate
14	3.9	Moderate
15	3.9	Moderate
16	4.0	Moderate
17	4.0	Moderate
18	4.0	Moderate
19	4.0	Bright
20	4.0	Bright
21	4.0	Bright
22	4.1	Bright
23	4.1	Bright
24	4.1	Bright
25	4.1	Bright
26	4.2	Bright
27	4.2	Bright
28	4.2	Bright
29	4.2	Bright
30	4.2	Bright

Planning a trip in September

Hazard calendar for Zwedru

In seasonPeak

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

Zwedru sees seasonal dust haze (February), heaviest in February.

Dust

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is September a good time to visit Zwedru?

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

3.2

Sightseeing

8th-best month of the year

4.0

Beach & pool

12th-best month of the year

September is a weaker month for outdoor sightseeing in Zwedru.

What to pack for Zwedru in September

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

In September, Zwedru sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. About 27 days see rain.

light clothesrain gear

UV index in Zwedru in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks 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 Zwedru peaks around April 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 8 (very high).

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)	10	13	12	13	12	11	9	11	13	12	10	8
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Extreme	Extreme	Extreme	Very high	Very high

	UV index (midday)	Level
Jan	10	Extreme
Feb	13	Extreme
Mar	12	Extreme
Apr	13	Extreme
May	12	Extreme
Jun	11	Extreme
Jul	9	Very high
Aug	11	Extreme
Sep	13	Extreme
Oct	12	Extreme
Nov	10	Very high
Dec	8	Very high

Air quality in Zwedru in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Zwedru is worst in February — around 46 µg/m³ PM2.5 (poor), about 5.1× the cleanest month (September, 9 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)	45	46	35	35	18	15	13	10	9	13	20	38
Level	Poor	Poor	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Good	Moderate	Moderate	Poor

	PM2.5 (µg/m³)	Level
Jan	45	Poor
Feb	46	Poor
Mar	35	Moderate
Apr	35	Moderate
May	18	Moderate
Jun	15	Moderate
Jul	13	Moderate
Aug	10	Good
Sep	9	Good
Oct	13	Moderate
Nov	20	Moderate
Dec	38	Poor

Location & terrain

Where is Zwedru?

Zwedru sits at 6.1°N, 8.1°W, 221 m above sea level, in Liberia. The nearest listed city is Bloléquin, 58 km away.

Topography around Zwedru

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

Within 3 km, the terrain around Zwedru has only modest variations in elevation — a maximum elevation change of 53 m around an average of 212 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 129 m; within 80 km, large variations in elevation — a maximum elevation change of 624 m.

The land around Zwedru is covered by trees (54%) and shrubs (22%) within 3 km, trees (97%) within 16 km, and trees (99%) within 80 km.

3 km

53 m

trees 54%

16 km

129 m

trees 97%

80 km

624 m

trees 99%

treesshrubsgrasslandartificial surfaces

← August Zwedru year-round climate October →Best places to visit in September

September weather nearby: Bloléquin 58 km · Zéaglo 65 km · Zagné 74 km · Nizahon II 88 km · Guiglo 88 km · Zouan-Hounien 95 km · Goya 96 km · Zou 108 km

Liberia travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type A / B; 120 V · 60 Hz
Prices: ≈ 0% of US; price level, 2025
GDP per capita: $915; 2025
Happiness: 4.3 / 10; World Happiness, 2025
Homicide rate: 3.1; per 100k, 2012
Road deaths: 38.9; per 100k/yr, 2019
Income group: Low; World Bank
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 Zwedru (6.0685°, -8.1356°, elevation 221 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	28	22
2	28	22
3	28	22
4	28	22
5	28	22
6	28	22
7	28	22
8	28	22
9	28	22
10	29	22
11	29	22
12	29	22
13	29	22
14	29	22
15	29	22
16	29	22
17	29	22
18	29	22
19	29	22
20	29	22
21	29	22
22	29	22
23	29	22
24	29	22
25	29	22
26	29	22
27	29	22
28	29	22
29	29	22
30	29	22

	Clearer (%)	Cloudier (%)
1	6	94
2	7	93
3	7	93
4	7	93
5	7	93
6	8	92
7	8	92
8	8	92
9	8	92
10	8	92
11	8	92
12	8	92
13	9	91
14	9	91
15	9	91
16	9	91
17	9	91
18	9	91
19	9	91
20	9	91
21	9	91
22	9	91
23	9	91
24	10	90
25	10	90
26	10	90
27	10	90
28	10	90
29	10	90
30	10	90

	Rain chance (%)
1	87
2	87
3	88
4	88
5	88
6	89
7	89
8	90
9	90
10	90
11	91
12	91
13	91
14	91
15	91
16	91
17	92
18	92
19	92
20	92
21	92
22	92
23	92
24	91
25	91
26	91
27	91
28	91
29	91
30	91

	Muggy (%)	Oppressive (%)
1	9	91
2	9	91
3	8	92
4	8	92
5	7	93
6	7	93
7	7	93
8	6	94
9	6	94
10	6	94
11	5	95
12	5	95
13	5	95
14	4	96
15	4	96
16	4	96
17	3	97
18	3	97
19	3	97
20	3	97
21	2	98
22	2	98
23	2	98
24	2	98
25	2	98
26	2	98
27	2	98
28	2	98
29	2	98
30	2	98

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

	Clearer (%)	Cloudier (%)
1	6	94
2	7	93
3	7	93
4	7	93
5	7	93
6	8	92
7	8	92
8	8	92
9	8	92
10	8	92
11	8	92
12	8	92
13	9	91
14	9	91
15	9	91
16	9	91
17	9	91
18	9	91
19	9	91
20	9	91
21	9	91
22	9	91
23	9	91
24	10	90
25	10	90
26	10	90
27	10	90
28	10	90
29	10	90
30	10	90

	Rain chance (%)
1	87
2	87
3	88
4	88
5	88
6	89
7	89
8	90
9	90
10	90
11	91
12	91
13	91
14	91
15	91
16	91
17	92
18	92
19	92
20	92
21	92
22	92
23	92
24	91
25	91
26	91
27	91
28	91
29	91
30	91

	Muggy (%)	Oppressive (%)
1	9	91
2	9	91
3	8	92
4	8	92
5	7	93
6	7	93
7	7	93
8	6	94
9	6	94
10	6	94
11	5	95
12	5	95
13	5	95
14	4	96
15	4	96
16	4	96
17	3	97
18	3	97
19	3	97
20	3	97
21	2	98
22	2	98
23	2	98
24	2	98
25	2	98
26	2	98
27	2	98
28	2	98
29	2	98
30	2	98

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

	Clearer (%)	Cloudier (%)
1	6	94
2	7	93
3	7	93
4	7	93
5	7	93
6	8	92
7	8	92
8	8	92
9	8	92
10	8	92
11	8	92
12	8	92
13	9	91
14	9	91
15	9	91
16	9	91
17	9	91
18	9	91
19	9	91
20	9	91
21	9	91
22	9	91
23	9	91
24	10	90
25	10	90
26	10	90
27	10	90
28	10	90
29	10	90
30	10	90

	Rain chance (%)
1	87
2	87
3	88
4	88
5	88
6	89
7	89
8	90
9	90
10	90
11	91
12	91
13	91
14	91
15	91
16	91
17	92
18	92
19	92
20	92
21	92
22	92
23	92
24	91
25	91
26	91
27	91
28	91
29	91
30	91

	Muggy (%)	Oppressive (%)
1	9	91
2	9	91
3	8	92
4	8	92
5	7	93
6	7	93
7	7	93
8	6	94
9	6	94
10	6	94
11	5	95
12	5	95
13	5	95
14	4	96
15	4	96
16	4	96
17	3	97
18	3	97
19	3	97
20	3	97
21	2	98
22	2	98
23	2	98
24	2	98
25	2	98
26	2	98
27	2	98
28	2	98
29	2	98
30	2	98