Environment Canada issued a 7-day weather forecast for Sidney, B.C., on Monday, May 25, 2026, saying the week will begin wet before turning dry and warmer mid-week. The forecast was issued at 4:00 PM PDT and last updated at 1:10 AM local time on Tuesday, May 26.
At 10:00 AM on Monday, May 25, conditions showed light rain and a temperature of 12.4 C with 87 percent humidity and an east-northeast wind of 8 km/h. No weather alerts were in effect for the Sidney area. Environment Canada expects showers through the day with a high near 15 C and winds becoming southeast 30 km/h gusting to 50 km/h this morning, then shifting to west 20 gusting to 40 km/h. The UV index for Monday is low at 2.
Clearing is forecast to begin Tuesday, May 26, with fog patches dissipating in the morning and northwest winds 20 km/h gusting to 40 in the morning, becoming light by afternoon. Highs Tuesday are expected near 19 C, with cooler readings around 15 C near the water and a moderate UV index of 5. Wednesday, May 27, should be the warmest day of the week with sunny skies and a high of 24 C, dropping to about 17 C near the shore and an overnight low near 12 C.
Thursday, May 28, is expected to be sunny, while Friday through Sunday, May 29 to 31, the forecast calls for a mix of sun and cloud with daytime highs between 18 C and 21 C and nighttime lows from 9 C to 11 C. Sidney normally sees May maximums near 18 C and minimums near 9 C, with late-May sunrise around 5:21 AM PDT and sunset about 9:00 PM PDT.
The timing may matter for residents and visitors. The Town of Sidney has about 12,318 people and a median age of 59.8 years, making the community older than the provincial average. Environment Canada notes the clearest and warmest conditions are expected mid-to-late week, so residents planning outdoor or waterfront activities should aim for Tuesday afternoon through Wednesday when conditions will be warmest and driest.
