Mount Pleasant weather in September

In September, Mount Pleasant sees average daytime highs of 18°C and overnight lows near 11°C, with 125 mm of rain across 10.2 wet days and about 12.4 hours of daylight. It is the 3rd-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 20°C in the first days to 16°C by the end. The sky is clear or mostly clear about 38% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 18 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is Mount Pleasant's 3rd-clearest and 11th-windiest month. For the whole year in context, see Mount Pleasant's year-round climate.

Daytime high
18°
3rd warmest
Overnight low
11°
10th coldest
Rainfall
125 mm
10.2 wet days
Daylight
12 h 24 min
5:56 AM – 6:17 PM
Cloud cover
52%
3rd clearest
Wind
6 km/h
11th windiest
Solar energy
3.85 kWh/m²
Travel score
5.9
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 20°C in the first days to 16°C by the end.

A typical September day in Mount Pleasant reaches about 18°C in the afternoon and slips back to 11°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 23°C. Set against its neighbours, September runs about 3°C cooler than August and about 6°C warmer than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
12012
22012
32012
42012
52012
62012
71912
81912
91911
101911
111911
121911
131911
141911
151811
161811
171811
181811
191811
201810
211810
221710
231710
241710
251710
261710
271710
28169
29169
30169

How September really feels in Mount Pleasant

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.

Mount Pleasant weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 316197.28.50.1
Feb / 18915.45.99.80.7
Mar / 25219.25.911.61.4
Apr12° / 17516.91.313.42.7
May16° / 11712.50.115.14.6
Jun18° / 11°9411.5015.95.6
Jul21° / 13°536.6015.67.3
Aug22° / 13°737.4014.27.2
Sep18° / 11°12510.2012.45.9
Oct13° / 24616.30.110.53.0
Nov / 34919.93.58.91.0
Dec / 30719.38.58.10.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 46%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15743
25743
35842
45842
55941
65941
75842
85842
95743
105743
115644
125545
135545
145347
155347
165347
175248
185248
195149
205149
215149
225050
235149
245149
255149
265149
275248
285149
295149
305050

Chance of precipitation in September

Any precipitation

Mount Pleasant gets around 125 mm of rain over 10.2 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 38% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
131
231
331
431
531
631
732
832
932
1033
1134
1235
1335
1436
1536
1636
1737
1837
1937
2037
2137
2237
2337
2437
2537
2637
2737
2837
2937
3038

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 81% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
17030
27030
37129
47228
57327
67327
77426
87525
97624
107723
117723
127822
137921
147921
158020
168119
178218
188317
198416
208515
218713
228812
238911
249010
25919
26928
27937
28946
29946
30955

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 18 min at the start of September to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 108 minutes over September. Sunrise moves from 5:34 AM to 6:17 AM, and sunset from 6:51 PM to 5:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:346:51
213.25:356:48
313.25:376:46
413.15:386:44
513.05:406:42
613.05:416:40
712.95:436:38
812.95:446:35
912.85:466:33
1012.75:476:31
1112.75:486:29
1212.65:506:26
1312.55:516:24
1412.55:536:22
1512.45:546:20
1612.45:566:17
1712.35:576:15
1812.25:596:13
1912.26:006:11
2012.16:026:09
2112.06:036:06
2212.06:056:04
2311.96:066:02
2411.96:086:00
2511.86:105:57
2611.76:115:55
2711.76:135:53
2811.66:145:51
2911.56:165:48
3011.56:175:46

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.85 kWh/m².

For context, solar energy here swings from a low near 0.76 kWh/m² to a high of 6.24 kWh/m² in July across the year — September's 3.85 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.5Bright
34.5Bright
44.4Bright
54.4Bright
64.3Bright
74.3Bright
84.3Bright
94.2Bright
104.1Bright
114.1Bright
124.0Bright
134.0Moderate
143.9Moderate
153.8Moderate
163.8Moderate
173.7Moderate
183.7Moderate
193.6Moderate
203.5Moderate
213.5Moderate
223.4Moderate
233.4Moderate
243.3Moderate
253.3Moderate
263.2Moderate
273.2Moderate
283.1Moderate
293.1Moderate
303.0Moderate
Planning a trip in September

Hazard calendar for Mount Pleasant

In seasonPeak

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

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

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

Is September a good time to visit Mount Pleasant?

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

5.9
Sightseeing
3rd-best month of the year
2.1
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Mount Pleasant for sightseeing.

What to pack for Mount Pleasant in September

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

In September, Mount Pleasant sees daytime highs around 18°C and nights near 11°C. Worth packing: rain gear. About 10 days see rain.

rain gear

Sea temperature near Mount Pleasant in September

The nearest coast averages about 14°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 16 km away) is warmest in August at about 16°C and coldest in January near 7°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

5°10°15°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan7Bracing
Feb7Bracing
Mar8Bracing
Apr10Bracing
May12Bracing
Jun14Bracing
Jul16Cool
Aug16Cool
Sep14Bracing
Oct11Bracing
Nov9Bracing
Dec8Bracing

UV index in Mount Pleasant in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mount Pleasant peaks around July 17 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 18 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 17UV 8Dec 18UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May7High
Jun6High
Jul8Very high
Aug6High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Mount Pleasant 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 Mount Pleasant is worst in August — around 18 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodAug 1517 µg/m³Dec 119 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb13Moderate
Mar16Moderate
Apr16Moderate
May17Moderate
Jun15Moderate
Jul15Moderate
Aug18Moderate
Sep14Moderate
Oct13Moderate
Nov9Good
Dec9Good
Location & terrain

Where is Mount Pleasant?

Mount Pleasant sits at 49.3°N, 123.1°W, 26 m above sea level, in Canada. The nearest listed city is Mt Pleasant, 0.0 km away.

Topography around Mount Pleasant

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

Within 3 km, the terrain around Mount Pleasant has only modest variations in elevation — a maximum elevation change of 127 m around an average of 36 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,464 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,632 m.

The land around Mount Pleasant is covered by artificial surfaces (61%) and trees (24%) within 3 km, trees (39%), water (27%) and artificial surfaces (24%) within 16 km, and trees (51%) and water (32%) within 80 km.

3 km
127 m
16 km
1,464 m
80 km
2,632 m
treesgrasslandcroplandartificial surfacesbare terrainsnow and icewater
September weather nearby: Mt Pleasant 0.0 km · Chinatown 2.0 km · Downtown Eastside 2.0 km · Downtown Vancouver 2.0 km · Vancouver 2.0 km · Fairview 2.0 km · Grandview-Woodlands 2.0 km · Riley Park 3.0 km

Canada travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 83% of US
price level, 2025
GDP per capita
$55,698
2025
Happiness
6.7 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
2
per 100k, 2023
Road deaths
5.3
per 100k/yr, 2019
Income group
High
World Bank
Religion
Christian 53%none 35%Muslim 5%Hindu 2%

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 Mount Pleasant (49.2667°, -123.1°, elevation 26 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).