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 perfect 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.

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For a detailed overview over the year and the best time to visit Spain, check out our San Jose's climate page.

San Jose Temperature in September

Min Temperature 22°C (72°F)  

Max Temperature 28°C (82°F)  

Water Temperature 25°C (77°F) *  

Chance of Rain 21%  

Precipitation 44 mm (1.7 in)  

Rainy days 6 days  

Humidity 72% *  

Sunshine 240 hours *  

Percentage Sunshine 63% *  

* Data from: Ibiza, Spain (9 KM, 5 Miles).

What to Wear in San Jose in September

Warm but pleasant conditions in San Jose 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. Wet weather is likely, so pack waterproof gear for multiple rainy days. With water temperatures around 25°C (77°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in San Jose 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 Spain, check out our San Jose's climate page.

More climate data for San Jose

Temperature Rainfall Sunshine Humidity Water Temp

See the full San Jose climate overview or explore weather in Spain.