Key Largo
Florida, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Key Largo, FL

A bright seascape and cloudy evening sky in Key Largo, Florida
A bright seascape and cloudy evening sky in Key Largo, Florida
Mayo, the last month of the spring, in Key Largo, is a hot month, with average temperature ranging between min 69.8°F (21°C) and max 86°F (30°C).

Temperature

In Key Largo, the average high-temperature in Mayo is practically the same as in Abril - a tropical 86°F (30°C). In Mayo, in Key Largo, Florida, the average low-temperature is 69.8°F (21°C).

Rainfall

In Mayo, the rain falls for 10 days. Throughout Mayo, 6.61" (168mm) of precipitation is accumulated. In Key Largo, during the entire year, the rain falls for 126 days and collects up to 56.65" (1439mm) of precipitation.

Ocean temperature

In Key Largo, the average water temperature is 81°F (27.2°C).
Note: For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In Key Largo, the average length of the day is 13.4h.

Sunshine

Abril through Julio, with an average of 10h of sunshine, are months with the most sunshine.

UV index

Abril through Agosto, with an average maximum UV index of 11, are months with the highest UV index in Key Largo. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 11 in Mayo transform into the following instructions:
Practice all essential precautions. Protection against sun damage is crucial. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in Mayo in Key Largo?

In Key Largo, Florida, in Mayo, the average high-temperature is 86°F (30°C), and the average low-temperature is 69.8°F (21°C).

How many days does it rain in Mayo in Key Largo?

In Key Largo, during Mayo, the rain falls for 10 days and regularly aggregates up to 6.61" (168mm) of precipitation.

What is the water temperature in Mayo in Key Largo?

In Key Largo, in Mayo, the average water temperature is 81°F (27.2°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Key Largo have in Mayo?

In Key Largo, the average length of the day in Mayo is 13.4h.

What is the month with the most sunshine in Key Largo?

Months with the most sunshine are Abril through Julio, with an average of 10h of sunshine.

How many hours of sunshine does Key Largo have in Mayo?

In Mayo, the average sunshine in Key Largo, Florida, is 10h.

When is the highest UV index in Key Largo?

Abril through Agosto, with an average maximum UV index of 11, are months with the highest UV index in Key Largo.

How high is the UV index in Mayo in Key Largo?

In Mayo, the average daily maximum UV index in Key Largo is 11. A UV Index estimate of 11, and higher, represents an ultimate hazard to health from the exposure to the Sun's UV radiation.
Average temperature in May - Key Largo, FL
  • Average high temperature in May: 86°F

Warmest months (with the highest average high temperature) are July, August and September (90°F).
The month with the lowest average high temperature is January (75°F).

  • Average low temperature in May: 70°F

Months with the highest average low temperature are July, August and September (73°F).
Coldest months (with the lowest average low temperature) are January and February (57°F).

Average rainfall in May - Key Largo, FL
  • Average rainfall in May: 6.6"

The wettest month (with the highest rainfall) is June (10").
The driest month (with the lowest rainfall) is December (1.4").

Average rainfall days in May - Key Largo, FL
  • Average rainfall days in May: 10 days

Months with the highest number of rainy days are August and September (17 days).
The month with the lowest number of rainy days is April (5 days).

Average sea temperature in May - Key Largo, FL
  • Average sea temperature in May: 81°F

The best month for swimming (with the highest average sea temperature) is August (86.8°F).
The coldest month (with the lowest average sea temperature) is February (72.6°F).

Average daylight in May / Average sunshine in May - Key Largo, FL
  • Average daylight in May: 13.4h

The month with the longest days is June (Average daylight: 13.7h).
The month with shortest days is December (Average daylight: 10.6h).

  • Average sunshine in May: 10h

Months with most sunshine are April, May, June and July (Average sunshine: 10h).
Months with least sunshine are January, November and December (Average sunshine: 7).

Average UV index in May - Key Largo, FL
  • Average UV index in May: 11

Months with the highest UV index are April, May, June, July and August (UV index 11).
The month with the lowest UV index is December (UV index 5).