Discover the best time of year, based on historical climate, temperature, and precipitation.
The best time to visit Sarnia is May, June, September, when the weather, flight prices, and crowds align. — variable climate
🌥Mild
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Contains affiliate links.
Contains affiliate links.
| Score | 10 | 13 | 18 | 38 | 83 | 81 | 79 | 80 | 83 | 58 | 25 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Polar | Polar | Cold | Cold | Mild | Humid | Humid | Humid | Pleasant | Mild | Cold | Cold |
| Temperature | -5–1°C | -6–3°C | -1–8°C | 3–13°C | 9–19°C | 15–25°C | 18–27°C | 18–26°C | 15–23°C | 9–16°C | 3–10°C | -1–4°C |
| Feels like | -10–-3°C | -11–-3°C | -6–4°C | -1–10°C | 6–18°C | 14–26°C | 19–28°C | 18–28°C | 14–23°C | 6–14°C | -1–6°C | -6–0°C |
| Precipitation | 72mm 10 days | 56mm 9 days | 72mm 10 days | 79mm 11 days | 65mm 12 days | 92mm 12 days | 101mm 11 days | 99mm 11 days | 70mm 10 days | 92mm 12 days | 48mm 10 days | 66mm 10 days |
| Sunshine | 2.8h ☀︎ 30% | 6.0h ☀︎ 57% | 6.8h ☀︎ 57% | 8.5h ☀︎ 63% | 10.5h ☀︎ 72% | 12.5h ☀︎ 82% | 12.3h ☀︎ 82% | 11.5h ☀︎ 83% | 9.8h ☀︎ 79% | 7.0h ☀︎ 64% | 6.0h ☀︎ 62% | 3.1h ☀︎ 35% |
| Wind | W · 22 km/h | W · 25 km/h | W · 25 km/h | W · 23 km/h | N · 21 km/h | W · 21 km/h | NW · 19 km/h | NW · 19 km/h | NW · 20 km/h | SW · 22 km/h | SW · 24 km/h | SW · 23 km/h |
| Humidity (%) | 77% | 72% | 70% | 69% | 70% | 69% | 75% | 77% | 75% | 73% | 72% | 76% |
| Perfect days | 0% | 0% | 1% | 7% | 24% | 37% | 39% | 47% | 45% | 13% | 2% | 0% |
| Dry streak | 8d | 8d | 8d | 8d | 8d | 6d | 7d | 7d | 9d | 7d | 8d | 8d |
| Sunny streak | 4d | 7d | 8d | 10d | 15d | 20d | 23d | 19d | 14d | 9d | 6d | 4d |
| Extreme heat | — | — | — | — | — | 0% | 0% | — | — | — | — | — |
| Extreme cold | 87% | 92% | 70% | 21% | 1% | — | — | — | — | 0% | 30% | 71% |
| Temperature | +1.4° | +3.5° | +3.7° | +0.3° | +0.6° | +0.4° | +0.3° | +0.0° | +0.4° | +1.5° | +1.3° | +3.1° |
| Rainfall | Stable | Stable | Stable | Stable | Stable | Stable | Stable | Getting wetter | Stable | Getting wetter | Stable | Stable |
| Ideal warm days | 0% | 0% | 0% | 0% | 7% | 17% | 33% | 28% | 13% | 1% | 0% | 0% |
| Outdoor comfort | 0% | 0% | 1% | 7% | 26% | 35% | 29% | 34% | 44% | 13% | 1% | 0% |
| Dry week odds | 10% | 12% | 12% | 9% | 10% | 6% | 5% | 4% | 12% | 6% | 12% | 10% |
| Heavy rain | 1% | 1% | 1% | 2% | 1% | 4% | 2% | 3% | 2% | 2% | 1% | 1% |
| Snow days | 47% | 47% | 26% | 13% | 1% | — | — | — | — | 2% | 17% | 40% |
| Muggy days | — | — | — | — | 1% | 6% | 15% | 14% | 4% | — | — | — |
| Day length | 9.4h | 10.5h | 12.0h | 13.4h | 14.7h | 15.3h | 15.0h | 13.9h | 12.5h | 11.0h | 9.7h | 9.1h |
| Tourist Crowds | Low season | Low season | Low season | Shoulder season | Shoulder season | High season | High season | High season | High season | Shoulder season | Shoulder season | Shoulder season |