San Jose Weather in September
September in San Jose brings high temperatures, with highs of 27°C (81°F) and nights dropping to 14°C (57°F). Rainfall is very low this month, averaging just 2.7 mm (0.1 in).
Rainfall in San Jose in September
The climate data from previous years indicates about a single day of rain, averaging 2.7 mm (0.1 in) for the month. On the rare occasion it rains this month, it usually amounts to very little.
Temperature in San Jose in September
San Jose in September is worth a visit. The temperature is perfect, with 27°C (81°F) during the day and 14°C (57°F) at night. September is known for being in the summer season. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights cool down to 14°C (57°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in San Jose in September
The city usually sees around 270 hours of sunlight, indicating many sunny days — a great month for sightseeing.If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit San Jose.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our San Jose's climate page.
San Jose Temperature in September
Min Temperature
14°C (57°F)
Max Temperature
27°C (81°F)
Chance of Rain
3%
Precipitation
2.7 mm (0.1 in)
Rainy days
a single day
Humidity
73% *
Sunshine
270 hours *
Percentage Sunshine
73% *
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in San Jose in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. With minimal rainfall expected, you can leave the rain gear at home. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in San Jose in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our San Jose's climate page.
Temperature Rainfall Sunshine Humidity
See the full San Jose climate overview or explore weather in the United States of America.
