Monthly climate averages for Chartwell, Canada. Based on 10-year ERA5 reanalysis data.
Csb Warm-Summer Mediterranean
Climate OverviewChartwell, Canada in August has warm conditions, with highs averaging 22.8°C (73°F). Sea temperature stays cool at 18.6°C (65°F).
This month falls at the end of Summer.
Temperatures remain fairly steady throughout August, with daily highs around 23°C (73°F).
August sees fairly even rainfall, totalling about 49 mm across the month.
Expect around 12.8h of sunshine at the start of August, decreasing to 11.1h by the end.
The warmest days tend to fall around the 3th, averaging 23.7°C (75°F).
Temperatures begin dropping heading into September.
Daily averages based on historical data (2016–2025)
Daytime temperatures around 23°C (73°F) are ideal for full-day outdoor exploration.
Rain usually comes in shorter passing showers rather than all-day rain.
1 of the last 5 yearly records were warmer than this month's long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 5°C / 1°C | 2°C / -2°C | 19days (327 mm) Wet | 3.7h Poor | 86% Very Muggy | 1.1 Low | Wet | View Details |
| February | 5°C / 1°C | 2°C / -3°C | 17days (187 mm) Wet | 5.3h Fair | 81% Humid | 1.7 Low | Wet | View Details |
| March | 8°C / 2°C | 5°C / -1°C | 19days (224 mm) Wet | 7.1h Good | 82% Humid | 2.9 Moderate | Wet | View Details |
| April | 11°C / 4°C | 9°C / 2°C | 16days (168 mm) Wet | 9.2h Good | 78% Humid | 4.5 Moderate | Poor | View Details |
| May | 16°C / 9°C | 15°C / 7°C | 11days (102 mm) Wet | 11.2h Excellent | 76% Humid | 5.3 High | Good | View Details |
| June | 19°C / 11°C | 19°C / 11°C | 12days (95 mm) Wet | 12.1h Excellent | 75% Muggy | 6 High | Good | View Details |
| July best | 22°C / 14°C | 23°C / 15°C | 5days (36 mm) Good | 13.3h Excellent | 73% Muggy | 6.5 High | Excellent | View Details |
| August best | 23°C / 16°C | 24°C / 16°C | 6days (49 mm) Good | 11.9h Excellent | 76% Humid | 5.5 High | Excellent | View Details |
| September best | 19°C / 13°C | 19°C / 12°C | 11days (153 mm) Wet | 9.2h Good | 82% Humid | 4.1 Moderate | Good | View Details |
| October | 13°C / 8°C | 11°C / 6°C | 17days (274 mm) Wet | 6.2h Fair | 84% Humid | 2.4 Moderate | Wet | View Details |
| November | 8°C / 4°C | 5°C / 1°C | 20days (368 mm) Wet | 4h Fair | 87% Very Muggy | 1.2 Low | Wet | View Details |
| December | 5°C / 2°C | 2°C / -2°C | 20days (323 mm) Wet | 3.1h Poor | 87% Very Muggy | 0.7 Low | Wet | View Details |
Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.
A waterproof jacket or compact umbrella is recommended for occasional showers.
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