Rio Grande Weather in September

Rio Grande in September sees high temperatures, with highs around 25°C (77°F) and overnight lows of 16°C (61°F). Rainfall is fairly high at around 103 mm (4.1 in) on average, so pack waterproofs just in case.

Rainfall in Rio Grande in September

Analyzing past climate data, one can expect approximately 9 days of rain, averaging 103 mm (4.1 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Rio Grande in September

September in Rio Grande brings high temperatures, with highs of 25°C (77°F) and nights around 16°C (61°F). This kind of day-to-night contrast is typical for this time of year. Nights cool down to 16°C (61°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.

Average water temperature in September

The water is 22°C (72°F) this month — warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.

If your ideal day consists of dry skies and pleasant temperatures, May typically offers the best circumstances for Rio Grande.

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

For a detailed overview over the year and the best time to visit the United States of America, check out our Rio Grande's climate page.

Rio Grande Temperature in September

Min Temperature 16°C (61°F)  

Max Temperature 25°C (77°F)  

Water Temperature 22°C (72°F) *  

Chance of Rain 30%  

Precipitation 103 mm (4.1 in)  

Rainy days 9 days  

* Data from: Cape May, the United States of America (9 KM, 5 Miles).

What to Wear in Rio Grande 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. Prepare for significant rainfall with proper waterproof clothing and shoes. The water temperature sits at about 22°C (72°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear.

What To Do in Rio Grande in September

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

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 the United States of America, check out our Rio Grande's climate page.

More climate data for Rio Grande

Temperature Rainfall Water Temp

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