Half Moon Bay Weather in April

Thinking of visiting Half Moon Bay in April? Expect moderate temperatures reaching 17°C (63°F) during the day, dropping to 7°C (45°F) at night, with some rainfall likely.

Rainfall in Half Moon Bay in April

You can expect rain on around 9 days based on historical patterns, with 54 mm (2.1 in) average for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Half Moon Bay in April

Daytime temperatures in Half Moon Bay reach 17°C (63°F) in April, dropping to 7°C (45°F) at night. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights drop to 7°C (45°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Half Moon Bay in April

Enjoy a sunny month with about 310 hours of sunshine, the clear skies make Half Moon Bay even more beautiful.

Wind Speed in Half Moon Bay in April

Wind speeds average 6 m/s (12 knots) during April. At this speed, expect strong winds that make large branches move and create some resistance when walking. Since this is an average, some days have fresh winds while others have strong breezes that can make umbrellas tricky to control.

Average water temperature in April

The water temperature is 13°C (55°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.

If your ideal day consists of dry skies and pleasant temperatures, May, June, July, August, September and October typically offer the best circumstances for Half Moon Bay.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
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• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Half Moon Bay's climate page.

Half Moon Bay Temperature in April

Min Temperature 7°C (45°F)  

Max Temperature 17°C (63°F)  

Water Temperature 13°C (55°F) *  

Chance of Rain 30%  

Precipitation 54 mm (2.1 in)  

Rainy days 9 days  

Humidity 72% *  

Windspeed 6 m/s (12 knots) *  

Sunshine 310 hours *  

Percentage Sunshine 78% *  

* Data from: San Francisco, the United States of America (17 KM, 10 Miles).

What to Wear in Half Moon Bay in April

For Half Moon Bay in April, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. With water temperatures around 13°C (55°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Half Moon Bay in April

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Half Moon Bay's climate page.

More climate data for Half Moon Bay

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Half Moon Bay climate overview or explore weather in the United States of America.