Sanibel Island weather by month

Check out Sanibel Island weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature
Rainfall
Sunshine & UV index

Temperature in Sanibel Island (°C)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	23	24	26	29	31	32	33	33	32	30	27	24
Min temperature (night-time)	12	12	15	17	20	23	24	24	23	20	16	13
Heat & Humidity	0	0	L	M	H	VH	VH	VH	VH	H	L	0
Sea temperature	20	20	21	23	26	29	30	30	29	27	24	22

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & UV index in Sanibel Island

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daily hours of sunshine	7	8	9	10	10	10	9	9	8	8	7	7
Daily hours of daylight	11	11	12	13	13	14	14	13	12	12	11	11
UV Index (Maximum)	5	7	9	11	11	11	11	11	10	8	6	5

Rainfall in Sanibel Island

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	6	6	6	4	8	13	14	16	14	9	6	6
Average monthly rainfall (mm)	50	59	74	36	93	225	210	223	198	85	39	43

More about Sanibel Island

Sanibel Island by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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The climate guide for Florida (Sanibel Island) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Sanibel Island?

Sanibel Island has a hot tropical climate with a winter dry season.

Sanibel Island weather in January

Expect daytime maximum temperatures of 23°C in Sanibel Island, Florida in January based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 50 mm of rainfall in the month.

23
23°C max day temperature
7
7 hours of sunshine per day
6
6 days with some rainfall
12
12°C min night temperature
11
11 hours of daylight per day
0
No heat & humidity
50
50 mm of monthly rainfall
5
5 (Moderate) UV index
20
20°C sea temperature

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Sanibel Island weather in February

Expect daytime maximum temperatures of 24°C in Sanibel Island, Florida in February based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 59 mm of rainfall in the month.

24
24°C max day temperature
8
8 hours of sunshine per day
6
6 days with some rainfall
12
12°C min night temperature
11
11 hours of daylight per day
0
No heat & humidity
59
59 mm of monthly rainfall
7
7 (High) UV index
20
20°C sea temperature

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Sanibel Island weather in March

Expect daytime maximum temperatures of 26°C in Sanibel Island, Florida in March based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 74 mm of rainfall in the month.

26
26°C max day temperature
9
9 hours of sunshine per day
6
6 days with some rainfall
15
15°C min night temperature
12
12 hours of daylight per day
L
Low heat & humidity
74
74 mm of monthly rainfall
9
9 (Very High) UV index
21
21°C sea temperature

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Sanibel Island weather in April

Expect daytime maximum temperatures of 29°C in Sanibel Island, Florida in April based on long-term weather averages. There are 10 hours of sunshine per day on average.

29
29°C max day temperature
10
10 hours of sunshine per day
4
4 days with some rainfall
17
17°C min night temperature
13
13 hours of daylight per day
M
Moderate heat & humidity
36
36 mm of monthly rainfall
11
11 (Extreme) UV index
23
23°C sea temperature

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Sanibel Island weather in May

Expect daytime maximum temperatures of 31°C in Sanibel Island, Florida in May and high heat and humidity based on long-term weather averages. There are 10 hours of sunshine per day on average with typically 93 mm of rainfall in the month.

31
31°C max day temperature
10
10 hours of sunshine per day
8
8 days with some rainfall
20
20°C min night temperature
13
13 hours of daylight per day
H
High heat & humidity
93
93 mm of monthly rainfall
11
11 (Extreme) UV index
26
26°C sea temperature

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Sanibel Island weather in June

Expect daytime maximum temperatures of 32°C in Sanibel Island, Florida in June and very high heat and humidity based on long-term weather averages. There are 10 hours of sunshine per day on average with 13 days with some rainfall and typically 225 mm of rainfall in the month.

32
32°C max day temperature
10
10 hours of sunshine per day
13
13 days with some rainfall
23
23°C min night temperature
14
14 hours of daylight per day
VH
Very High heat & humidity
225
225 mm of monthly rainfall
11
11 (Extreme) UV index
29
29°C sea temperature

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Sanibel Island weather in July

Expect daytime maximum temperatures of 33°C in Sanibel Island, Florida in July and very high heat and humidity based on long-term weather averages. There are 9 hours of sunshine per day on average with 14 days with some rainfall and typically 210 mm of rainfall in the month.

33
33°C max day temperature
9
9 hours of sunshine per day
14
14 days with some rainfall
24
24°C min night temperature
14
14 hours of daylight per day
VH
Very High heat & humidity
210
210 mm of monthly rainfall
11
11 (Extreme) UV index
30
30°C sea temperature

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Sanibel Island weather in August

Expect daytime maximum temperatures of 33°C in Sanibel Island, Florida in August and very high heat and humidity based on long-term weather averages. There are 9 hours of sunshine per day on average with 16 days with some rainfall and typically 223 mm of rainfall in the month.

33
33°C max day temperature
9
9 hours of sunshine per day
16
16 days with some rainfall
24
24°C min night temperature
13
13 hours of daylight per day
VH
Very High heat & humidity
223
223 mm of monthly rainfall
11
11 (Extreme) UV index
30
30°C sea temperature

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Sanibel Island weather in September

Expect daytime maximum temperatures of 32°C in Sanibel Island, Florida in September and very high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 14 days with some rainfall and typically 198 mm of rainfall in the month.

32
32°C max day temperature
8
8 hours of sunshine per day
14
14 days with some rainfall
23
23°C min night temperature
12
12 hours of daylight per day
VH
Very High heat & humidity
198
198 mm of monthly rainfall
10
10 (Very High) UV index
29
29°C sea temperature

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Sanibel Island weather in October

Expect daytime maximum temperatures of 30°C in Sanibel Island, Florida in October and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 85 mm of rainfall in the month.

30
30°C max day temperature
8
8 hours of sunshine per day
9
9 days with some rainfall
20
20°C min night temperature
12
12 hours of daylight per day
H
High heat & humidity
85
85 mm of monthly rainfall
8
8 (Very High) UV index
27
27°C sea temperature

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Sanibel Island weather in November

Expect daytime maximum temperatures of 27°C in Sanibel Island, Florida in November based on long-term weather averages. There are 7 hours of sunshine per day on average.

27
27°C max day temperature
7
7 hours of sunshine per day
6
6 days with some rainfall
16
16°C min night temperature
11
11 hours of daylight per day
L
Low heat & humidity
39
39 mm of monthly rainfall
6
6 (High) UV index
24
24°C sea temperature

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Sanibel Island weather in December

Expect daytime maximum temperatures of 24°C in Sanibel Island, Florida in December based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 43 mm of rainfall in the month.