When is the best time to go to Key Biscayne
The chart above shows the best time of year to visit Key Biscayne, United States. These are based on an analysis of weather averages such as temperature, rainfall and number of hours of sunshine. These ratings are based solely on the climate and do not take into account other factors such as accommodation prices and how busy it is likely to be.
Average temperatures in Key Biscayne
Key Biscayne weather by month
Please note our recommendations for when to visit Key Biscayne are based solely on the weather and do not take into accounts accommodation prices, how busy it will be and what events are on.
January
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 22°C | 61mm | 7.7hrs | 11.6hrs | 24°C |
January is a reasonably dry month in Key Biscayne and the temperature is generally warm.
It is perhaps a good month to visit Key Biscayne, with some very good weather at this time of year.
January is in the winter in Key Biscayne and is typically the coldest month of the year. Daytime maximum temperatures average around 24°C (75°F), whilst at night 15°C (60°F) is normal.
On average January is the driest month of the year in Key Biscayne with around 61mm 2.4 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.7 hours of sunshine per day.
Key Biscayne weather in January »
February
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 22°C | 59mm | 8.3hrs | 12.1hrs | 23°C |
February in Key Biscayne is generally reasonably dry with the temperature being warm.
It is perhaps the perfect month to visit Key Biscayne, with some extremely good weather at this time of year.
February is in the winter in Key Biscayne and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around 24°C (76°F), whilst at night 16°C (60°F) is normal.
On average February is the 2nd driest month of the year in Key Biscayne with around 59mm 2.3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.3 hours of sunshine per day.
Key Biscayne weather in February »
March
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 23°C | 57mm | 9.5hrs | 12.7hrs | 24°C |
The weather in March in Key Biscayne is characteristically warm, humid and reasonably dry.
It is perhaps the perfect month to visit Key Biscayne, with some inordinately good weather at this time of year.
March is in the spring in Key Biscayne and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a muggy 26°C (78°F), whilst at night 18°C (64°F) is normal.
On average March is the 3rd driest month of the year in Key Biscayne with around 57mm 2.3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.5 hours of sunshine per day.
Key Biscayne weather in March »
April
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 25°C | 75mm | 10.3hrs | 13.5hrs | 25°C |
Key Biscayne's weather in April is typically hot and reasonably dry in nature.
It is perhaps a good month to visit Key Biscayne, with some surprisingly good weather at this time of year.
April is in the spring in Key Biscayne and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a comfortable 28°C (82°F), whilst at night 20°C (68°F) is normal.
On average April is the 4th driest month of the year in Key Biscayne with around 75mm 3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 5 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.3 hours of sunshine per day.
Key Biscayne weather in April »
May
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 26°C | 151mm | 10.2hrs | 14.2hrs | 27°C |
May is a wet, humid month in Key Biscayne and the temperature is generally hot.
Although outside the main holiday season, there is still plenty of fairly acceptable weather around this time of year. This makes it an okay time to visit Key Biscayne.
May is in the spring in Key Biscayne and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a steamy 29°C (85°F), whilst at night 22°C (72°F) is normal.
On average May is the 5th driest month of the year in Key Biscayne with around 151mm 6 inches of rain making it a wet time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.2 hours of sunshine per day.
June
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 28°C | 212mm | 10hrs | 11.6hrs | 29°C |
The climate in Key Biscayne during June can be summarized as hot, humid and very wet.
Based on weather alone, this is probably a time of year to avoid going to Key Biscayne for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
June is in the summer in Key Biscayne and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a steamy 31°C (87°F), whilst at night 24°C (75°F) is normal.
On average June is the 6th driest month of the year in Key Biscayne with around 212mm 8.4 inches of rain making it a very wet time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 10 hours of sunshine per day.
Key Biscayne weather in June »
July
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 28°C | 135mm | 10.5hrs | 12.1hrs | 30°C |
July in Key Biscayne is generally wet with the temperature being very hot.
Based on weather alone, this is probably a time of year to avoid going to Key Biscayne for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
July is in the summer in Key Biscayne and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (89°F), whilst at night 25°C (76°F) is normal.
On average July is the 6th wettest month of the year in Key Biscayne with around 135mm 5.3 inches of rain making it a wet time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.5 hours of sunshine per day.
Key Biscayne weather in July »
August
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 28°C | 155mm | 9.8hrs | 12.7hrs | 30°C |
The weather in August in Key Biscayne is characteristically very hot, humid and wet.
Based on weather alone, this is probably a time of year to avoid going to Key Biscayne for your holidays. The weather is often pretty bad and not conducive to spending time outdoors.
August is in the summer in Key Biscayne and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (89°F), whilst at night 25°C (77°F) is normal.
On average August is the 5th wettest month of the year in Key Biscayne with around 155mm 6.1 inches of rain making it a wet time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.8 hours of sunshine per day.
Key Biscayne weather in August »
September
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 28°C | 187mm | 9.1hrs | 13.5hrs | 29°C |
Key Biscayne's weather in September is typically hot, humid and wet in nature.
Based on weather alone, this is probably a time of year to avoid going to Key Biscayne for your holidays. The weather is often not a good and not conducive to spending time outdoors.
September is in the fall / autumn in Key Biscayne and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (88°F), whilst at night 24°C (76°F) is normal.
On average September is the 4th wettest month of the year in Key Biscayne with around 187mm 7.4 inches of rain making it a wet time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.1 hours of sunshine per day.
Key Biscayne weather in September »
October
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 26°C | 157mm | 8.8hrs | 14.2hrs | 28°C |
October is a wet, humid month in Key Biscayne and the temperature is generally hot.
Although outside the main holiday season, there is still plenty of reasonably acceptable weather around this time of year. This makes it an okay time to visit Key Biscayne.
October is in the fall / autumn in Key Biscayne and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a steamy 29°C (84°F), whilst at night 22°C (72°F) is normal.
On average October is the 3rd wettest month of the year in Key Biscayne with around 157mm 6.2 inches of rain making it a wet time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.8 hours of sunshine per day.
Key Biscayne weather in October »
November
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 24°C | 85mm | 7.9hrs | 11.6hrs | 26°C |
November in Key Biscayne is generally a little damp with the temperature being hot.
It is perhaps a good month to visit Key Biscayne, with some inordinately good weather at this time of year.
November is in the fall / autumn in Key Biscayne and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (80°F), whilst at night 20°C (67°F) is normal.
On average November is the 2nd wettest month of the year in Key Biscayne with around 85mm 3.4 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.9 hours of sunshine per day.
Key Biscayne weather in November »
December
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 22°C | 50mm | 7.6hrs | 12.1hrs | 25°C |
December in Key Biscayne is generally reasonably dry with the temperature being warm.
It is perhaps the perfect month to visit Key Biscayne, with some very good weather at this time of year.
December is in the winter in Key Biscayne and is typically the warmest month of the year. Daytime maximum temperatures average around a muggy 25°C (76°F), whilst at night 17°C (62°F) is normal.
On average December is the wettest month of the year in Key Biscayne with around 50mm 2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.6 hours of sunshine per day.
Other monthly averages
Key Biscayne weather stats
| Hottest month: | August | 31.4°C 88.5°F |
|---|---|---|
| Driest month: | December | 50mm 2ins |
| Sunniest month: | April | 10.3hrs |
| Coldest month: | January | 23.6°C 74.5°F |
| Wettest month: | June | 212mm 8.3ins |
| Warmest sea: | August | 29.9°C 85.8°F |
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