San Jose Weather in September

September in San Jose brings high temperatures, with daytime highs of 28°C (82°F) and nights around 22°C (72°F). The excellent weather makes it a solid choice for a visit.

Rainfall in San Jose in September

Historically, September sees about 6 days of rain, with a monthly average of 44 mm (1.7 in). The odd shower may pass through, but it usually doesn't amount to much. A largely dry month overall.

Temperature in San Jose in September

September is one of the better months to visit San Jose. Expect 28°C (82°F) during the day and 22°C (72°F) at night. During September, you'll experience the summer season. Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 22°C (72°F), evenings stay pleasantly warm.

Sunshine in San Jose in September

The days are predominantly sunny, with an estimated total of around 240 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

Average water temperature in September

The water temperature is 25°C (77°F), which most people find very comfortable. A good month for swimming and water sports.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.