Sanniquellie weather in September

In September, Sanniquellie sees average daytime highs of 28°C and overnight lows near 22°C, with 297 mm of rain across 28.6 wet days and about 12 hours of daylight. It is the 10th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°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 11 h 54 min by month's end. Set against the rest of the year, September is Sanniquellie's 9th-clearest and 6th-windiest month. For the whole year in context, see Sanniquellie's year-round climate.

Daytime high
28°
10th warmest
Overnight low
22°
6th coldest
Rainfall
297 mm
28.6 wet days
Daylight
12 hours
6:28 AM – 6:30 PM
Cloud cover
83%
9th clearest
Wind
6 km/h
6th windiest
Solar energy
4.06 kWh/m²
Travel score
3.3
out of 10

Sanniquellie is town in Liberia.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical September day in Sanniquellie reaches about 28°C in the afternoon and slips back to 22°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 30°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12822
22822
32822
42822
52822
62822
72822
82822
92822
102822
112822
122822
132822
142822
152822
162822
172822
182822
192822
202822
212822
222822
232822
242822
252822
262822
272822
282922
292922
302922

How September really feels in Sanniquellie

Once humidity and wind are folded in, September averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Sanniquellie weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 21°245.411.64.9
Feb32° / 22°488.311.83.9
Mar32° / 23°11017.8123.4
Apr31° / 23°13720.612.23.2
May30° / 22°19225.712.33.1
Jun29° / 22°22627.312.43.3
Jul27° / 21°20626.612.43.8
Aug27° / 21°26826.912.23.8
Sep28° / 22°29728.6123.3
Oct29° / 22°19128.311.83.2
Nov29° / 21°8919.311.74.1
Dec30° / 21°28711.65.5

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 10% of September, with mostly cloudy or overcast conditions the remaining 90%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1694
2694
3694
4694
5793
6793
7793
8793
9793
10892
11892
12991
13991
141090
151090
161090
171090
181189
191189
201288
211189
221288
231288
241387
251387
261486
271486
281486
291585
301585

Chance of precipitation in September

Any precipitation

Sanniquellie gets around 297 mm of rain over 28.6 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 95% and peaks near 96% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
193
294
394
494
595
695
795
895
996
1096
1196
1296
1396
1496
1596
1696
1796
1896
1996
2096
2195
2295
2395
2495
2594
2694
2794
2893
2993
3093

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 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
11288
21288
31189
41189
51090
61090
7991
8991
9892
10892
11892
12793
13793
14694
15694
16595
17595
18595
19496
20496
21496
22496
23496
24397
25397
26397
27397
28397
29397
30397

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 06 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over September. Sunrise moves from 6:30 AM to 6:26 AM, and sunset from 6:39 PM to 6:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:306:39
212.16:306:38
312.16:306:38
412.16:306:37
512.16:306:37
612.16:306:36
712.16:296:36
812.16:296:35
912.16:296:34
1012.16:296:34
1112.16:296:33
1212.16:296:33
1312.16:286:32
1412.16:286:32
1512.06:286:31
1612.06:286:30
1712.06:286:30
1812.06:286:29
1912.06:276:29
2012.06:276:28
2112.06:276:27
2212.06:276:27
2312.06:276:26
2412.06:276:26
2512.06:276:25
2612.06:266:25
2712.06:266:24
2812.06:266:24
2911.96:266:23
3011.96:266:22

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.06 kWh/m².

For context, solar energy here swings from a low near 3.42 kWh/m² to a high of 5.14 kWh/m² in February across the year — September's 4.06 kWh/m² sits near the bottom.

012345151015202530
Solar energy (kWh/m²)Level
13.7Moderate
23.8Moderate
33.8Moderate
43.8Moderate
53.8Moderate
63.8Moderate
73.9Moderate
83.9Moderate
93.9Moderate
103.9Moderate
114.0Moderate
124.0Moderate
134.0Bright
144.0Bright
154.0Bright
164.1Bright
174.1Bright
184.1Bright
194.1Bright
204.2Bright
214.2Bright
224.2Bright
234.2Bright
244.2Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
Planning a trip in September

Hazard calendar for Sanniquellie

In seasonPeak

In September, Sanniquellie sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Sanniquellie's rainy season runs April–October, when most of the year's rain falls.

Sanniquellie sees seasonal dust haze (April), heaviest in April.

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

Is September a good time to visit Sanniquellie?

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

3.3
Sightseeing
8th-best month of the year
3.7
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Sanniquellie.

What to pack for Sanniquellie in September

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

In September, Sanniquellie sees daytime highs around 28°C and nights near 22°C. Pack light clothes and rain gear. About 29 days see rain.

light clothesrain gear

UV index in Sanniquellie 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 Sanniquellie peaks around March 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 8 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 18UV 13Dec 16UV 8
UV index (midday)Level
Jan10Very high
Feb12Extreme
Mar13Extreme
Apr12Extreme
May12Extreme
Jun11Extreme
Jul11Extreme
Aug12Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec8Very high

Air quality in Sanniquellie 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 Sanniquellie is worst in March — around 88 µg/m³ PM2.5 (unhealthy), about 9.7× the cleanest month (August, 9 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyModerateGoodModeratePoorMar 1286 µg/m³Aug 239 µg/m³
PM2.5 (µg/m³)Level
Jan55Poor
Feb79Unhealthy
Mar88Unhealthy
Apr56Unhealthy
May24Moderate
Jun15Moderate
Jul12Good
Aug9Good
Sep9Good
Oct15Moderate
Nov21Moderate
Dec41Poor
Location & terrain

Where is Sanniquellie?

Sanniquellie sits at 7.4°N, 8.7°W, 430 m above sea level, in Liberia. The nearest listed city is New Yekepa, 31 km away.

New YekepaGantaNzérékoréSaclepeaLolaDananéZouan-HounienMahapleu

Topography around Sanniquellie

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

Within 3 km, the terrain around Sanniquellie has only modest variations in elevation — a maximum elevation change of 77 m around an average of 438 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 655 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,523 m.

The land around Sanniquellie is covered by trees (67%) and grassland (21%) within 3 km, trees (96%) within 16 km, and trees (93%) within 80 km.

3 km
77 m
16 km
655 m
80 km
1,523 m
treesshrubsgrasslandartificial surfaces
September weather nearby: New Yekepa 31 km · Ganta 33 km · Nzérékoré 45 km · Saclepea 47 km · Lola 53 km · Danané 63 km · Zouan-Hounien 74 km · Mahapleu 88 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
Christian 85%Muslim 12%none 3%Traditional 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 Sanniquellie (7.3621°, -8.7133°, elevation 430 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).