San Antonio Weather in September

September in San Antonio averages 33°C (91°F) during the day and 23°C (73°F) at night. It is the wettest month of the year, with 178 mm (7 in) of rainfall on average, so waterproof gear is a must.

Rainfall in San Antonio in September

With peak rainfall occurring this month, heavy downpours are common. It's advisable to have a poncho on hand to manage the rain. You can expect rain on around 16 days based on historical patterns, with 178 mm (7 in) average for the month. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.

Temperature in San Antonio in September

If you're visiting San Antonio in September, expect highs of 33°C (91°F) and overnight lows around 23°C (73°F). If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. Nights are mild at around 23°C (73°F), which is comfortable for most people.

Sunshine in San Antonio in September

The area enjoys a moderate level of sunlight, with around 175 hours. It's a good balance between sunny and cloudy days.

If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit San Antonio. Our weather planner can help you explore destinations with more pleasant weather conditions.

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Check the conditions for any month of the year.

• January
• February
• March
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• May
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• October
• November
• December

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

San Antonio Temperature in September

Min Temperature 23°C (73°F)  

Max Temperature 33°C (91°F)  

Chance of Rain 52%  

Precipitation 178 mm (7 in)  

Rainy days 16 days  

Sunshine 175 hours *  

Percentage Sunshine *  

* Data from: Belmopan, Belize (33 KM, 20 Miles).

What to Wear in San Antonio 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). Also bring a poncho, it will rain a lot! Waterproof everything you can. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in San Antonio in September

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

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

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 Belize, check out our San Antonio's climate page.

More climate data for San Antonio

Temperature Rainfall Sunshine

See the full San Antonio climate overview or explore weather in Belize.