Jacksonville
Florida, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Jacksonville, FL

Water geysers at the fountain of Jacksonville in Florida, with the cityscape
Water geysers at the fountain of Jacksonville in Florida, with the cityscape
The last month of the spring, May, is also a moderately hot month in Jacksonville, Florida, with average temperature fluctuating between 85.5°F (29.7°C) and 62.8°F (17.1°C).

Temperature

In May, the average high-temperature slightly increases, from 79.2°F (26.2°C) in April, to a still moderately hot 85.5°F (29.7°C). In May, in Jacksonville, the average low-temperature is 62.8°F (17.1°C).

Humidity

The average relative humidity in May is 72.7%.

Rainfall

In May, the rain falls for 6.4 days. Throughout May, 2.5" (63mm) of precipitation is accumulated. In Jacksonville, during the entire year, the rain falls for 113.5 days and collects up to 52.4" (1330.6mm) of precipitation.

Ocean temperature

In Jacksonville, the average water temperature is 74.8°F (23.8°C). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 74.8°F (23.8°C) water. (FYI: The Olympic swimming competition requires a water temperature between 77°F (25°C) and 82.4°F (28°C).)

Daylight

In May, the average length of the day in Jacksonville is 13.7h.

Sunshine

With an average of 9.8h of sunshine, May has the most sunshine of the year in Jacksonville.

UV index

The average daily maximum UV index in May is 10. A UV Index of 8 to 10 symbolizes a very high health risk from unprotected exposure to the Sun's UV rays for average individuals.
The daily maximum UV index of 10 interpret into the following advice:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in May in Jacksonville?

In May, in Jacksonville, Florida, the average high-temperature is 85.5°F (29.7°C), and the average low-temperature is 62.8°F (17.1°C).

What is the average humidity in May in Jacksonville?

In Jacksonville, the average relative humidity in May is 72.7%.

How much does it rain in Jacksonville in May?

In Jacksonville, Florida, in May, it is raining for 6.4 days, with typically 2.5" (63mm) of accumulated precipitation.

What is the ocean temperature in May in Jacksonville?

In Jacksonville, Florida, in May, the average water temperature is 74.8°F (23.8°C). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 74.8°F (23.8°C) water may be enjoyable.

How many hours of daylight does Jacksonville have in May?

In Jacksonville, Florida, the average length of the day in May is 13.7h.

What month has the most sunshine in Jacksonville?

The month with the most sunshine in Jacksonville, Florida, is May, with an average of 9.8h of sunshine.

How many hours of sunshine does Jacksonville have in May?

In Jacksonville, Florida, the average sunshine in May is 9.8h.

What is the UV index reading in May in Jacksonville?

In Jacksonville, the average daily maximum UV index in May is 10. A UV Index value of 8 to 10 symbolizes a very high health risk from the exposure to the Sun's UV radiation.
Average temperature in May - Jacksonville, FL
  • Average high temperature in May: 85.5°F

The warmest month (with the highest average high temperature) is July (92°F).
The month with the lowest average high temperature is January (64.8°F).

  • Average low temperature in May: 62.7°F

The month with the highest average low temperature is August (72.7°F).
The coldest month (with the lowest average low temperature) is January (41.4°F).

Average humidity in May - Jacksonville, FL
  • Average humidity in May: 72.7%

The month with the highest relative humidity is September (80.8%).
The month with the lowest relative humidity is April (69.5%).

Average rainfall in May - Jacksonville, FL
  • Average rainfall in May: 2.5"

The wettest month (with the highest rainfall) is September (8.2").
The driest month (with the lowest rainfall) is November (2.1").

Average rainfall days in May - Jacksonville, FL
  • Average rainfall days in May: 6.4 days

The month with the highest number of rainy days is August (15 days).
The month with the lowest number of rainy days is April (5.7 days).

Average sea temperature in May - Jacksonville, FL
  • Average sea temperature in May: 74.9°F

The best month for swimming (with the highest average sea temperature) is August (83.5°F).
The coldest month (with the lowest average sea temperature) is February (60.4°F).

Average daylight in May / Average sunshine in May - Jacksonville, FL
  • Average daylight in May: 13.7h

The month with the longest days is June (Average daylight: 14.1h).
The month with shortest days is December (Average daylight: 10.2h).

  • Average sunshine in May: 9.8h

The month with most sunshine is May (Average sunshine: 9.8h).
The month with least sunshine is December (Average sunshine: 5.9h).

Average UV index in May - Jacksonville, FL
  • Average UV index in May: 10

Months with the highest UV index are June and July (UV index 11).
Months with the lowest UV index are January and December (UV index 4).