Lindsay weather in September

In September, Lindsay sees average daytime highs of 21°C and overnight lows near 10°C, with 83 mm of rain across 9.7 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 18°C by the end. The sky is clear or mostly clear about 32% 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 Lindsay's 3rd-clearest and 10th-windiest month. For the whole year in context, see Lindsay's year-round climate.

Daytime high
21°
4th warmest
Overnight low
10°
9th coldest
Rainfall
83 mm
9.7 wet days
Daylight
12 h 18 min
6:00 AM – 6:18 PM
Cloud cover
58%
3rd clearest
Wind
11 km/h
10th windiest
Solar energy
4.12 kWh/m²
Travel score
6.4
out of 10

Lindsay is community in Kawartha Lakes, Ontario, Canada.

Founded
1831

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 23°C in the first days to 18°C by the end.

A typical September day in Lindsay reaches about 21°C in the afternoon and slips back to 10°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 26°C. Set against its neighbours, September runs about 4°C cooler than August and about 8°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12313
22313
32313
42313
52312
62312
72212
82212
92212
102211
112211
122111
132111
142111
152110
162110
172110
182010
192010
20209
21209
22199
23199
24199
25198
26188
27188
28188
29188
30177

How September really feels in Lindsay

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.

Lindsay weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-3° / -12°6410.89.590.0
Feb-2° / -11°518.37.410.20.0
Mar / -6°6010.26.511.60.2
Apr12° / 8411.22.613.22.9
May19° / 8611.50.114.65.7
Jun24° / 13°10211.6015.36.5
Jul26° / 15°9611.40156.5
Aug25° / 14°9010.7013.86.8
Sep21° / 10°839.7012.36.4
Oct13° / 8311.70.510.83.5
Nov / -2°7210.53.69.40.6
Dec-0° / -7°6510.77.78.70.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 51%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15248
25149
35149
45149
55149
65050
75149
85050
95050
105050
115050
125050
135050
145050
154951
165050
175050
185050
194951
204852
214852
224753
234753
244654
254654
264555
274555
284456
294456
304456

Chance of precipitation in September

Any precipitation

Lindsay gets around 83 mm of rain over 9.7 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 32% and peaks near 36% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
131
231
331
432
532
632
732
832
933
1032
1132
1232
1332
1432
1532
1631
1731
1831
1931
2031
2131
2232
2332
2433
2534
2634
2735
2835
2936
3036

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 63% of days. Sticky, muggy-or-worse air turns up on roughly 5% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1432420121
2442419111
3462319111
4482318101
5492318101
651221791
753221690
854221680
955221580
1056221570
1158211470
1259211460
1360211360
1461211350
1563201250
1664201240
1764201240
1867191130
1967191130
2068181130
2170181020
2271171020
237316920
247316920
257615810
267714810
277714810
287913710
298112700
308311600

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

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 5:42 AM to 6:17 AM, and sunset from 6:47 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:426:47
213.05:436:45
313.05:456:43
412.95:466:41
512.95:476:40
612.85:486:38
712.85:496:36
812.75:516:34
912.75:526:32
1012.65:536:30
1112.65:546:28
1212.55:556:26
1312.55:576:24
1412.45:586:22
1512.45:596:20
1612.36:006:18
1712.26:016:16
1812.26:036:14
1912.16:046:12
2012.16:056:11
2112.06:066:09
2212.06:076:07
2311.96:096:05
2411.96:106:03
2511.86:116:01
2611.86:125:59
2711.76:145:57
2811.76:155:55
2911.66:165:53
3011.66:175:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.12 kWh/m².

For context, solar energy here swings from a low near 1.31 kWh/m² to a high of 6.31 kWh/m² in June across the year — September's 4.12 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.7Bright
34.7Bright
44.6Bright
54.6Bright
64.5Bright
74.5Bright
84.5Bright
94.4Bright
104.4Bright
114.3Bright
124.3Bright
134.2Bright
144.2Bright
154.2Bright
164.1Bright
174.1Bright
184.0Bright
194.0Moderate
203.9Moderate
213.9Moderate
223.8Moderate
233.8Moderate
243.7Moderate
253.7Moderate
263.6Moderate
273.6Moderate
283.5Moderate
293.5Moderate
303.4Moderate
Planning a trip in September

Is September a good time to visit Lindsay?

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

6.4
Sightseeing
4th-best month of the year
3.7
Beach & pool
4th-best month of the year

September is a reasonable time to visit Lindsay for sightseeing.

What to pack for Lindsay in September

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

In September, Lindsay sees daytime highs around 21°C and nights near 10°C. Worth packing: rain gear. About 10 days see rain.

rain gear

Sea temperature near Lindsay 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 54 km away) is warmest in August at about 21°C and coldest in March near 3°C.

It's comfortable for a long swim from Jul 27 to Sep 3 — about 1.3 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°C)Comfort
Jan4Bracing
Feb3Bracing
Mar3Bracing
Apr4Bracing
May7Bracing
Jun14Bracing
Jul19Cool
Aug21Refreshing
Sep19Cool
Oct13Bracing
Nov8Bracing
Dec5Bracing

UV index in Lindsay 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 Lindsay peaks around July 10 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 highHighModerateLowJul 10UV 8Jan 11UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr5High
May6High
Jun8Very high
Jul8Very high
Aug6High
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Lindsay 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 Lindsay is worst in June — around 16 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 1616 µg/m³Dec 108 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb12Good
Mar14Moderate
Apr14Moderate
May16Moderate
Jun16Moderate
Jul16Moderate
Aug14Moderate
Sep12Moderate
Oct8Good
Nov8Good
Dec8Good
Location & terrain

Where is Lindsay?

Lindsay sits at 44.4°N, 78.7°W, 261 m above sea level, in Canada. The nearest listed city is Peterborough, 34 km away.

Topography around Lindsay

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

Within 3 km, the terrain around Lindsay has only modest variations in elevation — a maximum elevation change of 42 m around an average of 266 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 79 m; within 80 km, significant variations in elevation — a maximum elevation change of 472 m.

The land around Lindsay is covered by cropland (28%), grassland (25%) and trees (22%) within 3 km, cropland (40%) and trees (35%) within 16 km, and trees (50%) within 80 km.

3 km
42 m
16 km
79 m
80 km
472 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Peterborough 34 km · Uxbridge 41 km · Brooklin 47 km · Bowmanville 48 km · Oshawa 51 km · Whitby 54 km · Stouffville 59 km · Pickering 59 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 Lindsay (44.3501°, -78.7329°, elevation 261 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).