Alameda Weather in September

In Alameda, September brings high daytime temperatures around 24°C (75°F), with nights cooling to 13°C (55°F). Minimal rainfall is to be expected.

Rainfall in Alameda in September

Records from the past 30 years suggest around a single day of rain, with 3.4 mm (0.1 in) average for the month. Any rain that does arrive is likely to be light drizzle rather than a proper shower.

Temperature in Alameda in September

The temperature in Alameda in September is excellent. Daytime highs reach 24°C (75°F), with nights dropping to 13°C (55°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With lows of 13°C (55°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest. On average, it sees the highest temps of the year.

Sunshine in Alameda in September

The month enjoys around 270 hours of sunshine, creating mostly sunny days with good weather conditions.

Wind Speed in Alameda in September

Average wind conditions reach 5 m/s (10 knots) in September. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.

Average water temperature in September

At 14°C (57°F), the water is cool but manageable for those who don't mind a bit of a shock getting in. Most people adjust after a few minutes.

If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Alameda.

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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 Alameda's climate page.

Alameda Temperature in September

Min Temperature 13°C (55°F)  

Max Temperature 24°C (75°F)  

Water Temperature 14°C (57°F) *  

Chance of Rain 3%  

Precipitation 3.4 mm (0.1 in)  

Rainy days a single day  

Humidity 73% *  

Windspeed 5 m/s (10 knots) *  

Sunshine 270 hours *  

Percentage Sunshine 73% *  

* Data from: San Francisco, the United States of America (20 KM, 12 Miles).

What to Wear in Alameda in September

For Alameda in September, 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. Almost no rain is expected, so no need to bring rain gear. Expect water temperatures of around 14°C (57°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Alameda in September

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

Swimming

10/10

Cycling

10/10

Walking

10/10

Barbeque

9/10

Camping

10/10

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 Alameda's climate page.

More climate data for Alameda

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

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