May weather forecast and climate
Delray Beach, FL

The strip of Delray Beach in Florida and the vast neon-lit city front
The strip of Delray Beach in Florida and the vast neon-lit city front
May, the last month of the spring, in Delray Beach, is another warm month, with average temperature ranging between min 75.9°F (24.4°C) and max 81.3°F (27.4°C).

Temperature

In Delray Beach, Florida, the average high-temperature in May is relatively the same as in April - a still warm 81.3°F (27.4°C). In Delray Beach, the average low-temperature is 75.9°F (24.4°C).

Heat index

The average heat index is estimated at 86°F (30°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'apparent temperature', or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like pregnancy, clothing, differences in body mass, height, and shape, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In May, the average relative humidity is 74%.

Rainfall

In Delray Beach, it is raining for 19 days, with typically 4.33" (110mm) of accumulated precipitation. In Delray Beach, during the entire year, the rain falls for 229 days and collects up to 46.46" (1180mm) of precipitation.

Ocean temperature

In May, the average ocean temperature is 80.8°F (27.1°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 Delray Beach, the average length of the day in May is 13.5h.

Sunshine

In Delray Beach, the average sunshine in May is 10.5h.

UV index

Months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in May in Delray Beach?

In May, in Delray Beach, Florida, the average high-temperature is 81.3°F (27.4°C), and the average low-temperature is 75.9°F (24.4°C). In May, the average heat index (a.k.a. 'real feel', 'feels like'), that combines relative humidity and air temperature, is estimated at 86°F (30°C).

What is the average humidity in May in Delray Beach?

In May, the average relative humidity is 74%.

How many days does it rain in May in Delray Beach?

In Delray Beach, in May, it is raining for 19 days, with typically 4.33" (110mm) of accumulated precipitation.

How warm is the water in May in Delray Beach?

In Delray Beach, the average seawater temperature in May is 80.8°F (27.1°C). 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.

What is the average length of the day in May in Delray Beach?

In Delray Beach, Florida, the average length of the day in May is 13.5h.

How long on average sun shines in May in Delray Beach?

In May, the average sunshine in Delray Beach is 10.5h.

When is the highest UV index in Delray Beach?

May through September, with an average maximum UV index of 7, are months with the highest UV index.

What is the UV index intensity in May in Delray Beach?

The average daily maximum UV index in May is 7. A UV Index reading of 6 to 7 represents a high hazard to health from unprotected exposure to the UV radiation.
Average temperature in May - Delray Beach, FL
  • Average high temperature in May: 81.3°F

The warmest month (with the highest average high temperature) is August (86.9°F).
The month with the lowest average high temperature is January (72.5°F).

  • Average low temperature in May: 75.9°F

The month with the highest average low temperature is August (81.5°F).
The coldest month (with the lowest average low temperature) is January (64°F).

Average pressure in May - Delray Beach, FL
  • Average pressure in May: 30.01"

The month with the highest atmospheric pressure is January (30.11").
Months with the lowest atmospheric pressure are September and October (29.96").

Average wind speed in May - Delray Beach, FL
  • Average wind speed in May: 10.3mph

The windiest month (with the highest average wind speed) is March (11.5mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

Average humidity in May - Delray Beach, FL
  • Average humidity in May: 74%

Months with the highest relative humidity are June, September and December (75%).
The month with the lowest relative humidity is March (70%).

Average rainfall in May - Delray Beach, FL
  • Average rainfall in May: 4.33"

The wettest month (with the highest rainfall) is August (8.03").
The driest month (with the least rainfall) is January (1.1").

Average rainfall days in May - Delray Beach, FL
  • Average rainfall days in May: 19 days

The month with the highest number of rainy days is August (27.3 days).
The month with the least rainy days is February (12.6 days).

Average sea temperature in May - Delray Beach, FL
  • Average sea temperature in May: 80.8°F

The best month for swimming (with the highest average sea temperature) is August (86.3°F).
The coldest months (with the lowest average sea temperature) are January and February (74.2°F).

Average daylight in May / Average sunshine in May - Delray Beach, FL
  • Average daylight in May: 13.5h

The month with the longest days is June (Average daylight: 13.8h).
The month with the shortest days is December (Average daylight: 10.5h).

  • Average sunshine in May: 10.5h

The month with the most sunshine is July (Average sunshine: 10.8h).
Months with the least sunshine are January and December (Average sunshine: 6.1).

Average sunshine days in May - Delray Beach, FL
  • Average sunshine days in May: 9.7 days

The month with the most sunshine days is March (14.2 days).
The month with the least sunshine days is September (2.5 days).

Average UV index in May - Delray Beach, FL
  • Average UV index in May: 7

Months with the highest UV index are May, June, July, August and September (UV index 7).
Months with the lowest UV index are January and February (UV index 5).

Average cloud cover in May - Delray Beach, FL
  • Average cloud cover in May: 29

Months with the most cloud cover are January, October, November and December (Cloud cover 36).
Months with the least cloud cover are April, May and July (Cloud cover 29).

Average visibility in May - Delray Beach, FL
  • Average visibility in May: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).