Mercer Island Weather in April

Mercer Island in April sees moderate temperatures, with highs around 15°C (59°F) and overnight lows of 6°C (43°F). Rainfall is fairly high at around 75 mm (3 in) on average, so pack waterproofs just in case.

Rainfall in Mercer Island in April

Analyzing past climate data, one can expect approximately 17 days of rain, averaging 75 mm (3 in). Expect plenty of grey, overcast days rather than intense storms. The rain rarely amounts to much on any given day.

Temperature in Mercer Island in April

April in Mercer Island brings moderate temperatures, with highs of 15°C (59°F) and nights around 6°C (43°F). Conditions are often most pleasant around the middle of the day. Nights fall to 6°C (43°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Mercer Island in April

The month enjoys around 208 hours of sunshine, creating mostly sunny days despite the cool temperatures.

Wind Speed in Mercer Island in April

In April, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.

Should you favor a climate that's both dry and comfortably warm, June, July, August and September typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.