Our verdict
The best time to visit Siesta Key is March-May
The very hottest temperatures in Siesta Key get to around 32℃ (90℉) in the height of summer. The coldest it usually gets in winter-time in Siesta Key is around 10℃ (50℉).
The sun stays up the longest in Siesta Key in July, so you’ll get the most out of your daytime activities if you visit around this time. August sees the most amount of rain in a month if you’re ok with chancing getting drenched, so if you’re looking to stay dry, visit in February instead.
Keep reading to find out more detailed information about the seasons and climate in Siesta Key, as well as our favourite tools to help you find the best options for transport, accommodation, and much more.
Quick links: Fast facts / Seasons / Average temperatures / Monthly climate / FAQs / Map
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Siesta Key seasons
Before you continue, it’s important to know when the seasons are in Siesta Key as they might be different to yours depending on where in the world you’re travelling from. Siesta Key is in the Northern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | June to August |
| Autumn/fall | September to November |
| Winter | December to February |
| Spring | March to May |
Average temperatures in Siesta Key
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Siesta Key for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
Siesta Key climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Siesta Key for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
Siesta Key in January
- Average temperature: 17℃ (62℉)
- Average high temperature: 20℃ (68℉)
- Average low temperature: 13℃ (56℉)
- Average humidity: 73%
- Average sunny days: 21 days
- Average rainfall: 31mm (1") over 8 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siesta Key in January, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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Siesta Key in February
- Average temperature: 18℃ (65℉)
- Average high temperature: 22℃ (71℉)
- Average low temperature: 15℃ (59℉)
- Average humidity: 75%
- Average sunny days: 18 days
- Average rainfall: 27mm (1") over 8 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siesta Key in February, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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Siesta Key in March
- Average temperature: 20℃ (68℉)
- Average high temperature: 24℃ (74℉)
- Average low temperature: 16℃ (62℉)
- Average humidity: 72%
- Average sunny days: 20 days
- Average rainfall: 32mm (1") over 9 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siesta Key in March, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Siesta Key in April
- Average temperature: 23℃ (74℉)
- Average high temperature: 27℃ (80℉)
- Average low temperature: 20℃ (68℉)
- Average humidity: 72%
- Average sunny days: 16 days
- Average rainfall: 34mm (1") over 12 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siesta Key in April, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Siesta Key in May
- Average temperature: 26℃ (78℉)
- Average high temperature: 29℃ (84℉)
- Average low temperature: 23℃ (73℉)
- Average humidity: 71%
- Average sunny days: 14 days
- Average rainfall: 65mm (3") over 15 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siesta Key in May, make sure you pack t-shirts and light clothing.
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Siesta Key in June
- Average temperature: 28℃ (82℉)
- Average high temperature: 31℃ (87℉)
- Average low temperature: 25℃ (78℉)
- Average humidity: 75%
- Average sunny days: 6 days
- Average rainfall: 134mm (5") over 22 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siesta Key in June, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Siesta Key in July
- Average temperature: 28℃ (83℉)
- Average high temperature: 31℃ (88℉)
- Average low temperature: 26℃ (79℉)
- Average humidity: 75%
- Average sunny days: 3 days
- Average rainfall: 140mm (6") over 26 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siesta Key in July, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Siesta Key in August
- Average temperature: 29℃ (84℉)
- Average high temperature: 32℃ (89℉)
- Average low temperature: 26℃ (79℉)
- Average humidity: 74%
- Average sunny days: 3 days
- Average rainfall: 152mm (6") over 27 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siesta Key in August, make sure you pack t-shirts and shorts.. It stays warm all day and night.
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Siesta Key in September
- Average temperature: 28℃ (82℉)
- Average high temperature: 31℃ (87℉)
- Average low temperature: 25℃ (77℉)
- Average humidity: 75%
- Average sunny days: 5 days
- Average rainfall: 117mm (5") over 23 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siesta Key in September, make sure you pack t-shirts and shorts.. It stays warm all day and night.
Siesta Key in October
- Average temperature: 25℃ (77℉)
- Average high temperature: 28℃ (83℉)
- Average low temperature: 22℃ (72℉)
- Average humidity: 73%
- Average sunny days: 15 days
- Average rainfall: 49mm (2") over 14 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siesta Key in October, make sure you pack t-shirts and light clothing.
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Siesta Key in November
- Average temperature: 21℃ (70℉)
- Average high temperature: 25℃ (76℉)
- Average low temperature: 18℃ (64℉)
- Average humidity: 73%
- Average sunny days: 20 days
- Average rainfall: 27mm (1") over 8 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siesta Key in November, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.
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Siesta Key in December
- Average temperature: 19℃ (67℉)
- Average high temperature: 22℃ (72℉)
- Average low temperature: 16℃ (61℉)
- Average humidity: 76%
- Average sunny days: 19 days
- Average rainfall: 50mm (2") over 9 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Siesta Key in December, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.
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