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 (°F)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	73	75	79	84	88	90	91	91	90	86	81	75
Min temperature (night-time)	54	54	59	63	68	73	75	75	73	68	61	55
Heat & Humidity	0	0	L	M	H	VH	VH	VH	VH	H	L	0
Sea temperature	68	68	70	73	79	84	86	86	84	81	75	72

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 (inches)	2.0	2.3	2.9	1.4	3.7	8.9	8.3	8.8	7.8	3.3	1.5	1.7

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 73°F in Sanibel Island, Florida in January based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 2.0 inches of rainfall in the month.

73
73°F max day temperature
7
7 hours of sunshine per day
6
6 days with some rainfall
54
54°F min night temperature
11
11 hours of daylight per day
0
No heat & humidity
2.0
2.0 inches of monthly rainfall
5
5 (Moderate) UV index
68
68°F sea temperature

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Sanibel Island weather in February

Expect daytime maximum temperatures of 75°F in Sanibel Island, Florida in February based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 2.3 inches of rainfall in the month.

75
75°F max day temperature
8
8 hours of sunshine per day
6
6 days with some rainfall
54
54°F min night temperature
11
11 hours of daylight per day
0
No heat & humidity
2.3
2.3 inches of monthly rainfall
7
7 (High) UV index
68
68°F sea temperature

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Sanibel Island weather in March

Expect daytime maximum temperatures of 79°F in Sanibel Island, Florida in March based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 2.9 inches of rainfall in the month.

79
79°F max day temperature
9
9 hours of sunshine per day
6
6 days with some rainfall
59
59°F min night temperature
12
12 hours of daylight per day
L
Low heat & humidity
2.9
2.9 inches of monthly rainfall
9
9 (Very High) UV index
70
70°F sea temperature

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Sanibel Island weather in April

Expect daytime maximum temperatures of 84°F in Sanibel Island, Florida in April based on long-term weather averages. There are 10 hours of sunshine per day on average.

84
84°F max day temperature
10
10 hours of sunshine per day
4
4 days with some rainfall
63
63°F min night temperature
13
13 hours of daylight per day
M
Moderate heat & humidity
1.4
1.4 inches of monthly rainfall
11
11 (Extreme) UV index
73
73°F sea temperature

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Sanibel Island weather in May

Expect daytime maximum temperatures of 88°F 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 3.7 inches of rainfall in the month.

88
88°F max day temperature
10
10 hours of sunshine per day
8
8 days with some rainfall
68
68°F min night temperature
13
13 hours of daylight per day
H
High heat & humidity
3.7
3.7 inches of monthly rainfall
11
11 (Extreme) UV index
79
79°F sea temperature

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Sanibel Island weather in June

Expect daytime maximum temperatures of 90°F 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 8.9 inches of rainfall in the month.

90
90°F max day temperature
10
10 hours of sunshine per day
13
13 days with some rainfall
73
73°F min night temperature
14
14 hours of daylight per day
VH
Very High heat & humidity
8.9
8.9 inches of monthly rainfall
11
11 (Extreme) UV index
84
84°F sea temperature

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Sanibel Island weather in July

Expect daytime maximum temperatures of 91°F 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 8.3 inches of rainfall in the month.

91
91°F max day temperature
9
9 hours of sunshine per day
14
14 days with some rainfall
75
75°F min night temperature
14
14 hours of daylight per day
VH
Very High heat & humidity
8.3
8.3 inches of monthly rainfall
11
11 (Extreme) UV index
86
86°F sea temperature

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Sanibel Island weather in August

Expect daytime maximum temperatures of 91°F 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 8.8 inches of rainfall in the month.

91
91°F max day temperature
9
9 hours of sunshine per day
16
16 days with some rainfall
75
75°F min night temperature
13
13 hours of daylight per day
VH
Very High heat & humidity
8.8
8.8 inches of monthly rainfall
11
11 (Extreme) UV index
86
86°F sea temperature

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Sanibel Island weather in September

Expect daytime maximum temperatures of 90°F 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 7.8 inches of rainfall in the month.

90
90°F max day temperature
8
8 hours of sunshine per day
14
14 days with some rainfall
73
73°F min night temperature
12
12 hours of daylight per day
VH
Very High heat & humidity
7.8
7.8 inches of monthly rainfall
10
10 (Very High) UV index
84
84°F sea temperature

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Sanibel Island weather in October

Expect daytime maximum temperatures of 86°F 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 3.3 inches of rainfall in the month.

86
86°F max day temperature
8
8 hours of sunshine per day
9
9 days with some rainfall
68
68°F min night temperature
12
12 hours of daylight per day
H
High heat & humidity
3.3
3.3 inches of monthly rainfall
8
8 (Very High) UV index
81
81°F sea temperature

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Sanibel Island weather in November

Expect daytime maximum temperatures of 81°F in Sanibel Island, Florida in November based on long-term weather averages. There are 7 hours of sunshine per day on average.

81
81°F max day temperature
7
7 hours of sunshine per day
6
6 days with some rainfall
61
61°F min night temperature
11
11 hours of daylight per day
L
Low heat & humidity
1.5
1.5 inches of monthly rainfall
6
6 (High) UV index
75
75°F sea temperature

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Sanibel Island weather in December

Expect daytime maximum temperatures of 75°F in Sanibel Island, Florida in December based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 1.7 inches of rainfall in the month.