Best time to visit Algonquin Park
Re-score for me — drag the dial — every chart on the page recolours live for your heat limit 27°C
Default 27 °C is the upper edge of the Holiday Climate Index "ideal comfort" band (Scott, Rutty, Amelung & Tang, 2016). Above this, most warm-tourism travellers report measurable discomfort.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme cold overrides them, so a clear sky or low rain can't lift the period.
How is this scored? HCI / Steadman / CCI gate — full methodology and citations below.
Compare with another destination
Add as many as you like — stacked below the main strips above. Each row is just the recent-window score strip and (for beach destinations) sea-temperature strip.
Similar climatesQuebec City94% · Ottawa92% · Montreal92%
Other destinations with the most-alike year-round climate to Algonquin Park (apparent temperature, rain hours, sunshine — matched within the same trip-profile). The ±N chip compares each match's typical score for the current month against Algonquin Park's. Based on the 2020-2024 climatology, not this year's actual weather.
Month-by-month
| Month | Temp °C | Feels °C | Rain days | Rain h | Rain h/day | Humidity | Wind km/h | Sun h | UV | Interest | Score |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | -13–-5 | -10 | 11 | 158 | 14.4 | 73% | 17 | 84 | 1 | Quiet | 3 |
| Feb | -13–-3 | -9 | 12 | 163 | 13.6 | 67% | 19 | 123 | 2 | Quiet | 3 |
| Mar | -7–3 | -2 | 11 | 145 | 13.2 | 60% | 19 | 158 | 3 | Quiet | 4 |
| Apr | -1–9 | 5 | 14 | 168 | 12.0 | 56% | 19 | 174 | 4 | Quiet | 4 |
| May | 6–17 | 15 | 10 | 112 | 11.2 | 50% | 17 | 249 | 5 | Quiet | 8 |
| Jun | 12–22 | 21 | 13 | 154 | 11.8 | 58% | 17 | 251 | 6 | Quiet | 8 |
| Jul | 15–24 | 24 | 14 | 153 | 10.9 | 61% | 16 | 273 | 6 | Quiet | 7 |
| Aug | 15–23 | 23 | 13 | 158 | 12.2 | 65% | 15 | 240 | 5 | Moderate | 7 |
| Sep | 11–19 | 18 | 11 | 127 | 11.5 | 66% | 16 | 200 | 4 | Peak | 7 |
| Oct | 5–13 | 10 | 13 | 171 | 13.2 | 70% | 18 | 141 | 2 | Quiet | 5 |
| Nov | -2–5 | 1 | 12 | 138 | 11.5 | 68% | 20 | 110 | 1 | Quiet | 4 |
| Dec | -8–-1 | -6 | 14 | 201 | 14.4 | 76% | 18 | 69 | 1 | Quiet | 3 |
UV Index in Algonquin Park by Month
UV index in Algonquin Park peaks at 6 (high) in July, dropping to 1 (low) in December. July have high UV — SPF 30+ and sunglasses recommended.
Best months in detail
June
8/1012–22°C · 13 rain days (154h) · 251 sun hours · 58% humidity · Quiet crowd · UV 6 (moderate) · sunniest 1 in 10 days reach 8 (high)
May
8/106–17°C (feels 15°C) · 10 rain days (112h) · 249 sun hours · 50% humidity · Quiet crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 7 (high)
July
7/1015–24°C · 14 rain days (153h) · 273 sun hours · 61% humidity · Quiet crowd · UV 6 (high) · sunniest 1 in 10 days reach 8 (high)
Every month
Show the other 9 months in detail
January
3/10-13–-5°C (feels -10°C) · 11 rain days (158h) · 84 sun hours · 73% humidity · Quiet crowd · UV 1 (low)
February
3/10-13–-3°C (feels -9°C) · 12 rain days (163h) · 123 sun hours · 67% humidity · Quiet crowd · UV 2 (low)
March
4/10-7–3°C (feels -2°C) · 11 rain days (145h) · 158 sun hours · 60% humidity · Quiet crowd · UV 3 (low) · sunniest 1 in 10 days reach 4 (moderate)
April
4/10-1–9°C (feels 5°C) · 14 rain days (168h) · 174 sun hours · 56% humidity · Quiet crowd · UV 4 (moderate) · sunniest 1 in 10 days reach 6 (high)
August
7/1015–23°C · 13 rain days (158h) · 240 sun hours · 65% humidity · Moderate crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 7 (high)
September
7/1011–19°C (feels 18°C) · 11 rain days (127h) · 200 sun hours · 66% humidity · Peak crowd · UV 4 (moderate) · sunniest 1 in 10 days reach 6 (moderate)
October
5/105–13°C (feels 10°C) · 13 rain days (171h) · 141 sun hours · 70% humidity · Quiet crowd · UV 2 (low) · sunniest 1 in 10 days reach 4 (moderate)
November
4/10-2–5°C (feels 1°C) · 12 rain days (138h) · 110 sun hours · 68% humidity · Quiet crowd · UV 1 (low)
December
3/10-8–-1°C (feels -6°C) · 14 rain days (201h) · 69 sun hours · 76% humidity · Quiet crowd · UV 1 (low)
Frequently asked questions about visiting Algonquin Park
When is the best time to visit Algonquin Park?
June is the highest-scoring month (8/10 on the Holiday Climate Index). Typical conditions: 12–22°C (13 rainy days). The top three months by score are June, May, July.
What is the worst time to visit Algonquin Park?
December is the lowest-scoring month (3/10, capped by extreme cold). Typical conditions: -8–-1°C (14 rainy days).
Is Algonquin Park too cold in winter?
3 months (January, February, December) cross our cold deal-breaker (apparent temperature below the cap). Doable with the right gear, but expect the climate score to be held down by the gate.
When are crowds lowest in Algonquin Park?
Search-interest seasonality (Google Trends 2021-2025) is lowest in January and peaks in September. Interest tracks both in-trip visitors and lead-time planners, so treat it as a "destination is on people's minds" signal rather than literal arrivals.
Which months in Algonquin Park have good weather but fewer tourists?
May (climate 8/10, crowd index 0) and June (climate 8/10, crowd index 0) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.
What is the UV index in Algonquin Park by month?
UV peaks at 6 (high) in July and is lowest in December at 1 (low). Monthly peak values: Jan 1, Feb 2, Mar 3, Apr 4, May 5, Jun 6, Jul 6, Aug 5, Sep 4, Oct 2, Nov 1, Dec 1.
What is the UV index in Algonquin Park in July?
July is the peak UV month in Algonquin Park, with a daily-peak UV index of 6 (high). Apply SPF 30+, wear sunglasses, and seek shade during midday hours.
How high can UV get in Algonquin Park on the sunniest days?
Most days look like the monthly average, but on the sunniest ~1 in 10 days UV climbs higher than the mean suggests. June is the worst case: typical days average UV 6 (moderate), but the top 10% of days reach UV 8 (high) — and even higher. Months where the sunniest days routinely exceed the typical reading: March, April, May, June, July, August, September, October. Plan sun protection for the worst case, not the average.
Is air quality in Algonquin Park bad for travelers?
PM2.5 (fine-particle pollution) exceeds the WHO sensitive-group guideline (15 µg/m³) in 1 month: June. The worst month is June with a typical-day mean of 14 µg/m³ (moderate); on the worst 10% of days PM2.5 reaches 29 µg/m³ (unhealthy) and higher. People with asthma, heart conditions, or sensitive children may want to avoid these months or limit outdoor activity. Source: CAMS via Open-Meteo.