Belmont Weather in September

Belmont in September sees high daytime temperatures of 25°C (77°F) and nighttime lows of 13°C (55°F). With just 3.4 mm (0.1 in) of rainfall expected, it's a dry month overall.

Rainfall in Belmont in September

Analyzing past climate data, one can expect approximately a single day of rain, averaging 3.4 mm (0.1 in). On the rare occasion it rains this month, it usually amounts to very little.

Temperature in Belmont in September

Belmont in September has excellent weather. Days reach 25°C (77°F) and nights cool to 13°C (55°F). The summer season is characteristic of September. This kind of day-to-night contrast is typical for this time of year. With overnight lows of 13°C (55°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep. This is typically the warmest month of the year, so light summer clothing is a good idea.

Sunshine in Belmont in September

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

Wind Speed in Belmont in September

Wind speeds average 5 m/s (10 knots) during September. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.

Average water temperature in September

The water temperature is 14°C (57°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 you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Belmont.

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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 Belmont's climate page.

Belmont Temperature in September

Min Temperature 13°C (55°F)  

Max Temperature 25°C (77°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 (14 KM, 8 Miles).

What to Wear in Belmont in September

Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Almost no rain is expected, so no need to bring rain gear. With water temperatures around 14°C (57°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Belmont 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 Belmont's climate page.

More climate data for Belmont

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

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