Wasaga Beach weather in September

In September, Wasaga Beach sees average daytime highs of 20°C and overnight lows near 12°C, with 85 mm of rain across 11.5 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 17°C by the end. The sky is clear or mostly clear about 33% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 06 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Wasaga Beach's 4th-clearest and 8th-windiest month. For the whole year in context, see Wasaga Beach's year-round climate.

Daytime high
20°
4th warmest
Overnight low
12°
9th coldest
Rainfall
85 mm
11.5 wet days
Daylight
12 h 18 min
6:05 AM – 6:24 PM
Cloud cover
57%
4th clearest
Wind
14 km/h
8th windiest
Solar energy
3.97 kWh/m²
Travel score
6.1
out of 10

Wasaga Beach is town in Simcoe County, Ontario, Canada.

Founded
1974

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 22°C in the first days to 17°C by the end.

A typical September day in Wasaga Beach reaches about 20°C in the afternoon and slips back to 12°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 26°C. Set against its neighbours, September runs about 4°C cooler than August and about 7°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12215
22215
32215
42215
52214
62214
72214
82114
92114
102113
112113
122113
132113
142013
152013
162012
172012
182012
191912
201912
211911
221911
231911
241811
251811
261810
271810
281710
291710
30179

How September really feels in Wasaga Beach

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.

Wasaga Beach weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-3° / -10°691313.390.0
Feb-3° / -10°519.39.510.10.0
Mar / -5°6010.57.211.60.0
Apr / 8211.13.513.21.6
May15° / 8410.20.114.64.6
Jun21° / 13°8310.8015.36.4
Jul24° / 17°7811.10156.9
Aug24° / 16°8411.4013.96.8
Sep20° / 12°8511.5012.36.1
Oct13° / 9114.10.610.73.2
Nov / 8814.26.39.40.5
Dec / -5°7515.313.18.70.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 49%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15743
25743
35743
45644
55644
65545
75545
85446
95347
105347
115248
125347
135248
145149
155149
165149
175050
185050
195050
204951
214951
224951
234753
244753
254654
264654
274456
284456
294357
304357

Chance of precipitation in September

Any precipitation

Wasaga Beach gets around 85 mm of rain over 11.5 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 38% and peaks near 44% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
135
235
336
436
536
637
737
837
937
1037
1137
1237
1337
1437
1537
1637
1736
1836
1937
2037
2137
2238
2339
2440
2540
2641
2742
2843
2943
3044

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 60% of days. Sticky, muggy-or-worse air turns up on roughly 5% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
138282212
239282112
341282011
443271911
544271810
646271810
74826179
84926168
95125168
105325157
115524147
125624146
135823136
145923135
156022135
166222124
176321124
186321124
196620113
206620113
216919102
22701992
23711892
24721882
25741781
26761671
27761671
28781561
29791461
30801451

Wind in September

Winds average 14 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 06 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 90 minutes over September. Sunrise moves from 5:47 AM to 6:22 AM, and sunset from 6:52 PM to 5:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:476:52
213.05:486:50
313.05:506:49
412.95:516:47
512.95:526:45
612.85:536:43
712.85:546:41
812.75:566:39
912.75:576:37
1012.65:586:35
1112.65:596:33
1212.56:006:31
1312.56:026:29
1412.46:036:27
1512.46:046:25
1612.36:056:24
1712.36:066:22
1812.26:086:20
1912.16:096:18
2012.16:106:16
2112.06:116:14
2212.06:136:12
2311.96:146:10
2411.96:156:08
2511.86:166:06
2611.86:176:04
2711.76:196:02
2811.76:206:00
2911.66:215:58
3011.66:225:56

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.97 kWh/m².

For context, solar energy here swings from a low near 1.14 kWh/m² to a high of 6.3 kWh/m² in June across the year — September's 3.97 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.5Bright
44.5Bright
54.5Bright
64.4Bright
74.4Bright
84.3Bright
94.3Bright
104.2Bright
114.2Bright
124.1Bright
134.1Bright
144.0Bright
154.0Moderate
163.9Moderate
173.9Moderate
183.8Moderate
193.8Moderate
203.8Moderate
213.7Moderate
223.6Moderate
233.6Moderate
243.5Moderate
253.5Moderate
263.5Moderate
273.4Moderate
283.4Moderate
293.3Moderate
303.3Moderate
Planning a trip in September

Is September a good time to visit Wasaga Beach?

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

6.1
Sightseeing
4th-best month of the year
3.1
Beach & pool
4th-best month of the year

September is a reasonable time to visit Wasaga Beach for sightseeing.

What to pack for Wasaga Beach in September

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

In September, Wasaga Beach sees daytime highs around 20°C and nights near 12°C. Worth packing: rain gear. About 12 days see rain.

rain gear

Sea temperature near Wasaga Beach in September

The nearest coast averages about 19°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 15 km away) is warmest in August at about 21°C and coldest in March near 1°C.

It's comfortable for a long swim from Aug 9 to Aug 24 — about 0.5 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°C)Comfort
Jan3Bracing
Feb2Bracing
Mar1Bracing
Apr2Bracing
May5Bracing
Jun11Bracing
Jul19Cool
Aug21Refreshing
Sep19Cool
Oct13Bracing
Nov9Bracing
Dec6Bracing

UV index in Wasaga Beach in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Wasaga Beach peaks around June 21 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 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 highHighModerateLowJun 21UV 8Jan 11UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr5High
May6High
Jun8Very high
Jul8Very high
Aug7High
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Wasaga Beach?

Wasaga Beach sits at 44.5°N, 80.0°W, 188 m above sea level, in Canada. The nearest listed city is Collingwood, 16 km away.

Topography around Wasaga Beach

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

Within 3 km, the terrain around Wasaga Beach has only modest variations in elevation — a maximum elevation change of 55 m around an average of 187 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 103 m; within 80 km, significant variations in elevation — a maximum elevation change of 371 m.

The land around Wasaga Beach is covered by trees (42%) and water (38%) within 3 km, water (34%), cropland (33%) and trees (24%) within 16 km, and trees (41%), water (28%) and cropland (20%) within 80 km.

3 km
55 m
16 km
103 m
80 km
371 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Collingwood 16 km · Midland 28 km · Barrie 31 km · Innisfil 38 km · Alliston 42 km · Orillia 48 km · Keswick 53 km · East Gwillimbury 65 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 Wasaga Beach (44.5168°, -80.0164°, elevation 188 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).