Orillia weather in September
In September, Orillia sees average daytime highs of 20°C and overnight lows near 11°C, with 84 mm of rain across 10.9 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 22°C in the first days to 17°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 Orillia's 3rd-clearest and 9th-windiest month. For the whole year in context, see Orillia's year-round climate.
- Daytime high
- 20°
- 4th warmest
- Overnight low
- 11°
- 9th coldest
- Rainfall
- 84 mm
- 10.9 wet days
- Daylight
- 12 h 18 min
- 6:03 AM – 6:21 PM
- Cloud cover
- 58%
- 3rd clearest
- Wind
- 11 km/h
- 9th windiest
- Solar energy
- 3.97 kWh/m²
- Travel score
- 6.1
- out of 10
Orillia is city in Ontario, Canada.
- Founded
- 1867
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Highs ease over the month, from about 22°C in the first days to 17°C by the end.
A typical September day in Orillia reaches about 20°C in the afternoon and slips back to 11°C overnight — a 9°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.
| 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) | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 17 | 17 | 17 |
| Avg low (°C) | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 8 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 23 | 14 |
| 2 | 23 | 14 |
| 3 | 22 | 14 |
| 4 | 22 | 13 |
| 5 | 22 | 13 |
| 6 | 22 | 13 |
| 7 | 22 | 13 |
| 8 | 22 | 13 |
| 9 | 21 | 12 |
| 10 | 21 | 12 |
| 11 | 21 | 12 |
| 12 | 21 | 12 |
| 13 | 21 | 12 |
| 14 | 21 | 11 |
| 15 | 20 | 11 |
| 16 | 20 | 11 |
| 17 | 20 | 11 |
| 18 | 20 | 11 |
| 19 | 20 | 11 |
| 20 | 19 | 10 |
| 21 | 19 | 10 |
| 22 | 19 | 10 |
| 23 | 19 | 10 |
| 24 | 18 | 10 |
| 25 | 18 | 9 |
| 26 | 18 | 9 |
| 27 | 18 | 9 |
| 28 | 17 | 9 |
| 29 | 17 | 9 |
| 30 | 17 | 8 |
How September really feels in Orillia
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.
September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Orillia 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.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | -4° / -11° | 65 | 11.9 | 11.5 | 9 | 0.0 |
| Feb | -3° / -11° | 50 | 9 | 8.5 | 10.1 | 0.0 |
| Mar | 2° / -6° | 60 | 10.1 | 7 | 11.6 | 0.0 |
| Apr | 10° / 1° | 79 | 11.1 | 3.1 | 13.2 | 2.4 |
| May | 18° / 8° | 87 | 11.1 | 0 | 14.6 | 5.5 |
| Jun | 23° / 13° | 94 | 11 | 0 | 15.3 | 6.6 |
| Jul | 25° / 16° | 88 | 11.7 | 0 | 15 | 6.7 |
| Aug | 24° / 15° | 88 | 11.5 | 0 | 13.9 | 6.8 |
| Sep | 20° / 11° | 84 | 10.9 | 0 | 12.3 | 6.1 |
| Oct | 13° / 5° | 88 | 13.6 | 0.5 | 10.7 | 3.1 |
| Nov | 5° / -1° | 76 | 12.3 | 4.9 | 9.4 | 0.4 |
| Dec | -1° / -7° | 65 | 12.9 | 10.7 | 8.7 | 0.0 |
Cloud cover in September
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.
| 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 (%) | 54 | 54 | 53 | 54 | 54 | 53 | 52 | 53 | 52 | 51 | 52 | 51 | 50 | 50 | 51 | 51 | 50 | 50 | 49 | 49 | 48 | 48 | 47 | 46 | 45 | 44 | 44 | 43 | 43 | 42 |
| Cloudier (%) | 46 | 46 | 47 | 46 | 46 | 47 | 48 | 47 | 48 | 49 | 48 | 49 | 50 | 50 | 49 | 49 | 50 | 50 | 51 | 51 | 52 | 52 | 53 | 54 | 55 | 56 | 56 | 57 | 57 | 58 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 54 | 46 |
| 2 | 54 | 46 |
| 3 | 53 | 47 |
| 4 | 54 | 46 |
| 5 | 54 | 46 |
| 6 | 53 | 47 |
| 7 | 52 | 48 |
| 8 | 53 | 47 |
| 9 | 52 | 48 |
| 10 | 51 | 49 |
| 11 | 52 | 48 |
| 12 | 51 | 49 |
| 13 | 50 | 50 |
| 14 | 50 | 50 |
| 15 | 51 | 49 |
| 16 | 51 | 49 |
| 17 | 50 | 50 |
| 18 | 50 | 50 |
| 19 | 49 | 51 |
| 20 | 49 | 51 |
| 21 | 48 | 52 |
| 22 | 48 | 52 |
| 23 | 47 | 53 |
| 24 | 46 | 54 |
| 25 | 45 | 55 |
| 26 | 44 | 56 |
| 27 | 44 | 56 |
| 28 | 43 | 57 |
| 29 | 43 | 57 |
| 30 | 42 | 58 |
Chance of precipitation in September
Orillia gets around 84 mm of rain over 10.9 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 36% and peaks near 42% 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 (%) | 35 | 35 | 35 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 35 | 35 | 35 | 34 | 34 | 34 | 34 | 35 | 35 | 36 | 37 | 38 | 38 | 39 | 40 | 41 | 42 | 42 |
| Rain chance (%) | |
|---|---|
| 1 | 35 |
| 2 | 35 |
| 3 | 35 |
| 4 | 36 |
| 5 | 36 |
| 6 | 36 |
| 7 | 36 |
| 8 | 36 |
| 9 | 36 |
| 10 | 36 |
| 11 | 36 |
| 12 | 36 |
| 13 | 35 |
| 14 | 35 |
| 15 | 35 |
| 16 | 34 |
| 17 | 34 |
| 18 | 34 |
| 19 | 34 |
| 20 | 35 |
| 21 | 35 |
| 22 | 36 |
| 23 | 37 |
| 24 | 38 |
| 25 | 38 |
| 26 | 39 |
| 27 | 40 |
| 28 | 41 |
| 29 | 42 |
| 30 | 42 |
Humidity in September
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 57% of days. Sticky, muggy-or-worse air turns up on roughly 5% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 33 | 35 | 37 | 38 | 40 | 42 | 44 | 45 | 47 | 49 | 51 | 52 | 54 | 55 | 57 | 57 | 59 | 61 | 62 | 63 | 66 | 67 | 68 | 70 | 72 | 74 | 76 | 76 | 78 | 79 |
| Comfortable (%) | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 26 | 26 | 25 | 25 | 24 | 23 | 23 | 22 | 21 | 21 | 20 | 19 | 18 | 17 | 16 | 16 | 15 | 14 |
| Humid (%) | 23 | 22 | 21 | 21 | 20 | 19 | 19 | 18 | 17 | 17 | 16 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 12 | 12 | 11 | 10 | 10 | 9 | 9 | 8 | 7 | 7 | 6 | 6 |
| Muggy (%) | 13 | 12 | 12 | 11 | 10 | 9 | 8 | 8 | 7 | 7 | 6 | 6 | 5 | 5 | 4 | 4 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 33 | 30 | 23 | 13 |
| 2 | 35 | 30 | 22 | 12 |
| 3 | 37 | 30 | 21 | 12 |
| 4 | 38 | 30 | 21 | 11 |
| 5 | 40 | 29 | 20 | 10 |
| 6 | 42 | 29 | 19 | 9 |
| 7 | 44 | 29 | 19 | 8 |
| 8 | 45 | 28 | 18 | 8 |
| 9 | 47 | 28 | 17 | 7 |
| 10 | 49 | 28 | 17 | 7 |
| 11 | 51 | 27 | 16 | 6 |
| 12 | 52 | 27 | 15 | 6 |
| 13 | 54 | 26 | 15 | 5 |
| 14 | 55 | 26 | 14 | 5 |
| 15 | 57 | 25 | 14 | 4 |
| 16 | 57 | 25 | 14 | 4 |
| 17 | 59 | 24 | 13 | 4 |
| 18 | 61 | 23 | 13 | 3 |
| 19 | 62 | 23 | 12 | 3 |
| 20 | 63 | 22 | 12 | 3 |
| 21 | 66 | 21 | 11 | 2 |
| 22 | 67 | 21 | 10 | 2 |
| 23 | 68 | 20 | 10 | 2 |
| 24 | 70 | 19 | 9 | 2 |
| 25 | 72 | 18 | 9 | 1 |
| 26 | 74 | 17 | 8 | 1 |
| 27 | 76 | 16 | 7 | 1 |
| 28 | 76 | 16 | 7 | 1 |
| 29 | 78 | 15 | 6 | 1 |
| 30 | 79 | 14 | 6 | 1 |
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.
| 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) | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| 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 | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 11 | calm |
| 2 | 11 | calm |
| 3 | 11 | calm |
| 4 | 11 | calm |
| 5 | 11 | calm |
| 6 | 11 | calm |
| 7 | 11 | calm |
| 8 | 11 | calm |
| 9 | 11 | calm |
| 10 | 11 | calm |
| 11 | 11 | calm |
| 12 | 11 | calm |
| 13 | 11 | calm |
| 14 | 11 | calm |
| 15 | 11 | calm |
| 16 | 11 | calm |
| 17 | 11 | calm |
| 18 | 11 | calm |
| 19 | 12 | calm |
| 20 | 12 | calm |
| 21 | 12 | calm |
| 22 | 12 | calm |
| 23 | 12 | calm |
| 24 | 12 | calm |
| 25 | 12 | calm |
| 26 | 12 | calm |
| 27 | 12 | calm |
| 28 | 12 | light breeze |
| 29 | 12 | light breeze |
| 30 | 12 | light breeze |
Sunrise & sunset in September
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 5:45 AM to 6:20 AM, and sunset from 6:50 PM to 5:54 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) | 13.1 | 13.0 | 13.0 | 12.9 | 12.9 | 12.8 | 12.8 | 12.7 | 12.7 | 12.6 | 12.6 | 12.5 | 12.5 | 12.4 | 12.4 | 12.3 | 12.3 | 12.2 | 12.1 | 12.1 | 12.0 | 12.0 | 11.9 | 11.9 | 11.8 | 11.8 | 11.7 | 11.7 | 11.6 | 11.6 |
| Sunrise (AM) | 5:45 | 5:46 | 5:47 | 5:48 | 5:50 | 5:51 | 5:52 | 5:53 | 5:54 | 5:56 | 5:57 | 5:58 | 5:59 | 6:00 | 6:02 | 6:03 | 6:04 | 6:05 | 6:07 | 6:08 | 6:09 | 6:10 | 6:11 | 6:13 | 6:14 | 6:15 | 6:16 | 6:18 | 6:19 | 6:20 |
| Sunset (PM) | 6:50 | 6:48 | 6:46 | 6:44 | 6:43 | 6:41 | 6:39 | 6:37 | 6:35 | 6:33 | 6:31 | 6:29 | 6:27 | 6:25 | 6:23 | 6:21 | 6:19 | 6:17 | 6:15 | 6:13 | 6:11 | 6:09 | 6:07 | 6:05 | 6:04 | 6:02 | 6:00 | 5:58 | 5:56 | 5:54 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.1 | 5:45 | 6:50 |
| 2 | 13.0 | 5:46 | 6:48 |
| 3 | 13.0 | 5:47 | 6:46 |
| 4 | 12.9 | 5:48 | 6:44 |
| 5 | 12.9 | 5:50 | 6:43 |
| 6 | 12.8 | 5:51 | 6:41 |
| 7 | 12.8 | 5:52 | 6:39 |
| 8 | 12.7 | 5:53 | 6:37 |
| 9 | 12.7 | 5:54 | 6:35 |
| 10 | 12.6 | 5:56 | 6:33 |
| 11 | 12.6 | 5:57 | 6:31 |
| 12 | 12.5 | 5:58 | 6:29 |
| 13 | 12.5 | 5:59 | 6:27 |
| 14 | 12.4 | 6:00 | 6:25 |
| 15 | 12.4 | 6:02 | 6:23 |
| 16 | 12.3 | 6:03 | 6:21 |
| 17 | 12.3 | 6:04 | 6:19 |
| 18 | 12.2 | 6:05 | 6:17 |
| 19 | 12.1 | 6:07 | 6:15 |
| 20 | 12.1 | 6:08 | 6:13 |
| 21 | 12.0 | 6:09 | 6:11 |
| 22 | 12.0 | 6:10 | 6:09 |
| 23 | 11.9 | 6:11 | 6:07 |
| 24 | 11.9 | 6:13 | 6:05 |
| 25 | 11.8 | 6:14 | 6:04 |
| 26 | 11.8 | 6:15 | 6:02 |
| 27 | 11.7 | 6:16 | 6:00 |
| 28 | 11.7 | 6:18 | 5:58 |
| 29 | 11.6 | 6:19 | 5:56 |
| 30 | 11.6 | 6:20 | 5:54 |
Solar energy in September
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 1.29 kWh/m² to a high of 6.22 kWh/m² in June across the year — September's 3.97 kWh/m² falls in the middle.
| 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) | 4.6 | 4.6 | 4.5 | 4.5 | 4.4 | 4.4 | 4.3 | 4.3 | 4.3 | 4.2 | 4.2 | 4.1 | 4.1 | 4.0 | 4.0 | 3.9 | 3.9 | 3.9 | 3.8 | 3.8 | 3.7 | 3.7 | 3.6 | 3.6 | 3.5 | 3.5 | 3.4 | 3.4 | 3.3 | 3.3 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.6 | Bright |
| 2 | 4.6 | Bright |
| 3 | 4.5 | Bright |
| 4 | 4.5 | Bright |
| 5 | 4.4 | Bright |
| 6 | 4.4 | Bright |
| 7 | 4.3 | Bright |
| 8 | 4.3 | Bright |
| 9 | 4.3 | Bright |
| 10 | 4.2 | Bright |
| 11 | 4.2 | Bright |
| 12 | 4.1 | Bright |
| 13 | 4.1 | Bright |
| 14 | 4.0 | Bright |
| 15 | 4.0 | Moderate |
| 16 | 3.9 | Moderate |
| 17 | 3.9 | Moderate |
| 18 | 3.9 | Moderate |
| 19 | 3.8 | Moderate |
| 20 | 3.8 | Moderate |
| 21 | 3.7 | Moderate |
| 22 | 3.7 | Moderate |
| 23 | 3.6 | Moderate |
| 24 | 3.6 | Moderate |
| 25 | 3.5 | Moderate |
| 26 | 3.5 | Moderate |
| 27 | 3.4 | Moderate |
| 28 | 3.4 | Moderate |
| 29 | 3.3 | Moderate |
| 30 | 3.3 | Moderate |
Is September a good time to visit Orillia?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is a reasonable time to visit Orillia for sightseeing.
What to pack for Orillia in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Orillia sees daytime highs around 20°C and nights near 11°C. Worth packing: rain gear. About 11 days see rain.
Sea temperature near Orillia 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 56 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 3 | 2 | 1 | 2 | 5 | 11 | 19 | 21 | 19 | 13 | 9 | 6 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Cool | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 3 | Bracing |
| Feb | 2 | Bracing |
| Mar | 1 | Bracing |
| Apr | 2 | Bracing |
| May | 5 | Bracing |
| Jun | 11 | Bracing |
| Jul | 19 | Cool |
| Aug | 21 | Refreshing |
| Sep | 19 | Cool |
| Oct | 13 | Bracing |
| Nov | 9 | Bracing |
| Dec | 6 | Bracing |
UV index in Orillia in September
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 Orillia peaks around June 20 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 3 | 5 | 7 | 8 | 8 | 6 | 5 | 3 | 2 | 1 |
| Level | Low | Low | Moderate | High | High | Very high | Very high | High | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 3 | Moderate |
| Apr | 5 | High |
| May | 7 | High |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 6 | High |
| Sep | 5 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Air quality in Orillia in September
Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.
Air quality in Orillia is worst in May — around 19 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (November, 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) | 11 | 14 | 16 | 17 | 19 | 18 | 18 | 16 | 14 | 10 | 9 | 9 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 14 | Moderate |
| Mar | 16 | Moderate |
| Apr | 17 | Moderate |
| May | 19 | Moderate |
| Jun | 18 | Moderate |
| Jul | 18 | Moderate |
| Aug | 16 | Moderate |
| Sep | 14 | Moderate |
| Oct | 10 | Good |
| Nov | 9 | Good |
| Dec | 9 | Good |
Where is Orillia?
Orillia sits at 44.6°N, 79.4°W, 232 m above sea level, in Canada. The nearest listed city is Barrie, 30 km away.
Topography around Orillia
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Orillia.
Within 3 km, the terrain around Orillia has only modest variations in elevation — a maximum elevation change of 87 m around an average of 239 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 203 m; within 80 km, significant variations in elevation — a maximum elevation change of 404 m.
The land around Orillia is covered by trees (32%), artificial surfaces (28%) and water (25%) within 3 km, trees (41%) and water (27%) within 16 km, and trees (54%) within 80 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
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 Orillia (44.6087°, -79.4207°, elevation 232 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).