Tampa
Florida, USA
Long-term weather forecast
Long-term weather forecast
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September weather forecast and Climate
Tampa, FL

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The Hillsborough River flowing under the bridge in Tampa, Florida, with a beautiful skyline above
The Hillsborough River flowing under the bridge in Tampa, Florida, with a beautiful skyline above
By mid-September, the daily temperatures drop below the 86°F (30°C), and the rain also subsides a little. The combination of humidity at a high level of 77.6% and the sea temperature at an average of 84°F (28.9°C) do not make it a comfortable atmosphere for open sea activities.
Add the fact that the ultraviolet index of the sun is at 9, and it cancels out any possibilities of moving around the city during the day in shorts.
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  • The average high temperature in September: 31.6°C

Warmest months (with the highest average high temperature) are July and August (32.3°C).
The month with the lowest average high temperature is January (21.1°C).

  • The average low temperature in September: 23.6°C

The month with the highest average low temperature is August (24.6°C).
The coldest month (with the lowest average low temperature) is January (10.9°C).

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  • The average humidity in September: 77.6%

The month with the highest relative humidity is August (78.4%).
The month with the lowest relative humidity is April (69%).

  • The average rainfall in September: 149mm

The wettest month (with the highest rainfall) is August (185mm).
The driest month (with the lowest rainfall) is April (39mm).

  • The average rainfall days in September: 12.2 days

The month with the highest number of rainy days is August (16 days).
The month with the lowest number of rainy days is April (4.9 days).

  • The average sea temperature in September: 29.1°C

The best month for swimming (with the highest average sea temperature) is August (30.3°C).
The coldest month (with the lowest average sea temperature) is January (18.2°C).

  • The average daylight in September: 12h

Months with the longest days are May, June and July (Average daylight: 14h).
The month with shortest days is December (Average daylight: 10h).

  • The average sunshine in September: 7.4h

The month with most sunshine is May (Average sunshine: 10.1h).
The month with least sunshine is December (Average sunshine: 6.2h).

  • The average UV index in September: 9

Months with the highest UV index are June, July and August (UV index 11).
The month with the lowest UV index is December (UV index 4).

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