Weather forecast for 10 daysSanibel, FL

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 84°F
  • 70°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 20mphNE 48°
  • Humidity: 67%
  • UV index: 8
  • Sunrise: 7:29 am EDT
  • Sunset: 6:57 pm EDT
  • ▼
Today, on Sunday, October 18, partly cloudy conditions with persistent winds will remain in place.
The maximum temperature will be a temperate 84.2°F, while the minimum expected temperature is a pleasant 69.8°F.
The maximum heat index, which reflects the perceived temperature due to humidity levels, is estimated at a hot 89.6°F. Take into consideration that the heat index values are calculated for shade and light wind conditions.
The anticipated daily high is projected to match October's typical maximum of 82.9°F.
Sunrise was at 7:29 am and sunset will be at 6:57 pm; the daylight will last for 11h and 28min.

10-day overview

Daily temperatures

Warmest day: tomorrow 86°C.
Minimum temperature: 82°C.

Chance of precipitation

Highest chance: Tuesday 27.10. 19%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 84°F
  • 70°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 20mphNE 48°
  • Humidity: 67%
  • UV index: 8
  • Sunrise: 7:29 am EDT
  • Sunset: 6:57 pm EDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 86°F
  • 66°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 17mphNE 47°
  • Humidity: 71%
  • UV index: 8
  • Sunrise: 7:29 am EDT
  • Sunset: 6:56 pm EDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 84°F
  • 64°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 13mphNE 37°
  • Humidity: 65%
  • UV index: 8
  • Sunrise: 7:30 am EDT
  • Sunset: 6:55 pm EDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 84°F
  • 66°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 11mphNNE 27°
  • Humidity: 64%
  • UV index: 8
  • Sunrise: 7:30 am EDT
  • Sunset: 6:54 pm EDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 82°F
  • 66°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 11mphNNE 25°
  • Humidity: 61%
  • UV index: 8
  • Sunrise: 7:31 am EDT
  • Sunset: 6:53 pm EDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 82°F
  • 66°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 12mphNE 34°
  • Humidity: 59%
  • UV index: 8
  • Sunrise: 7:31 am EDT
  • Sunset: 6:52 pm EDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 84°F
  • 68°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 18%
  • Precipitation: 0"
  • Wind: 17mphNE 37°
  • Humidity: 65%
  • UV index: 8
  • Sunrise: 7:32 am EDT
  • Sunset: 6:52 pm EDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 82°F
  • 68°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 12%
  • Precipitation: 0"
  • Wind: 19mphNE 34°
  • Humidity: 68%
  • UV index: 8
  • Sunrise: 7:33 am EDT
  • Sunset: 6:51 pm EDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 82°F
  • 68°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0"
  • Wind: 17mphNNE 26°
  • Humidity: 66%
  • UV index: 7
  • Sunrise: 7:33 am EDT
  • Sunset: 6:50 pm EDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 82°F
  • 68°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 14mphNNE 20°
  • Humidity: 64%
  • UV index: 7
  • Sunrise: 7:34 am EDT
  • Sunset: 6:49 pm EDT
  • ▼
Ten-day trends indicate that primarily sunny and occasionally cloud-filled weather is expected.
Rainfall is not anticipated in Sanibel in the upcoming days.
The temperature shift across days will be subtle across the forecast window. Expected highs will hover between 82.4°F and 86°F, while the lowest nightly temperature differences will be also negligible, as the lowest temperatures will remain in the range of 64.4°F to 69.8°F.
Monday is expected to be the hottest, reaching up to 86°F; with a maximum temperature of 82.4°F, Thursday, Friday, next Sunday through next Tuesday will be the coldest days in Sanibel.
Taking the humidity into consideration, the maximum feel-like temperature may increase and range between 84.2°F and a sweltering 95°F.
Updated: Oct 18, 2026 @ 13:01:49 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, expect a partly cloudy sky with occasional wind gusts.

Today, the maximum temperature will be 84.2°F, while the minimum temperature will be 69.8°F. The maximum heat index, which factors the actual air temperature with the relative humidity, is evaluated at 89.6°F.
The maximum temperature will be in line with the average highest temperature of 82.9°F in October. The lowest temperature today will be slightly cooler than the average low temperature.

On Sunday, in Sanibel, sunrise was at 7:29 am and sunset will be at 6:57 pm (EDT).

In Sanibel, the length of the day today will be 11h and 28min.