Hayward Weather in September

September in Hayward brings high temperatures, with daytime highs of 25°C (77°F) and nights around 13°C (55°F). Only 4.2 mm (0.2 in) of rainfall is typical, making it a largely dry month.

Rainfall in Hayward in September

Analyzing past climate data, one can expect approximately a single day of rain, averaging 4.2 mm (0.2 in). On the rare occasion it rains, expect a brief, moderate shower rather than a heavy downpour.

Temperature in Hayward in September

September in Hayward is generally excellent, with days reaching 25°C (77°F) and nights settling around 13°C (55°F). During September, you'll experience the summer season. Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights drop to around 13°C (55°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable. This is typically the warmest month of the year, so light summer clothing is a good idea.

Sunshine in Hayward in September

Expect a lot of sunshine this month, with about 270 hours of sun. These sunny conditions add to the overall experience.

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

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 Hayward's climate page.

Hayward Temperature in September

Min Temperature 13°C (55°F)  

Max Temperature 25°C (77°F)  

Chance of Rain 3%  

Precipitation 4.2 mm (0.2 in)  

Rainy days a single day  

Humidity 73% *  

Sunshine 270 hours *  

Percentage Sunshine 73% *  

* Data from: San Francisco, the United States of America (27 KM, 16 Miles).

What to Wear in Hayward in September

Warm but pleasant conditions in Hayward in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Dry conditions mean you won't need to worry about rain protection. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Hayward in September

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

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

10/10

Outdoor sports

8/10

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 Hayward's climate page.

More climate data for Hayward

Temperature Rainfall Sunshine Humidity

See the full Hayward climate overview or explore weather in the United States of America.