Dublin
Ireland
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Dublin, Ireland

A sunset view of the illuminated Ha Penny Bridge reflected in the water below, in Dublin, Ireland
A sunset view of the illuminated Ha Penny Bridge reflected in the water below, in Dublin, Ireland
May, the last month of the spring, in Dublin, is a mild month, with average temperature varying between 9°C (48.2°F) and 15.2°C (59.4°F).

Temperature

In Dublin, the average high-temperature in May is almost the same as in April - a moderate 15.2°C (59.4°F). In Dublin, in May, the average low-temperature is 9°C (48.2°F).

Rainfall

In Dublin, it is raining for 11 days, with typically 57.9mm (2.28") of accumulated precipitation. Throughout the year, there are 128 rainfall days, and 714.4mm (28.13") of precipitation is accumulated.

Sea temperature

In May, the average sea temperature is 10.4°C (50.7°F).
Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

Daylight

In May, the average length of the day in Dublin is 15.9h.

Sunshine

The month with the most sunshine in Dublin is May, with an average of 6.3h of sunshine.

UV index

In Dublin, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.

What is the temperature in May in Dublin?

The average high-temperature, in May, in Dublin, Ireland, is 15.2°C (59.4°F), while the average low-temperature is 9°C (48.2°F).

How much does it rain in Dublin in May?

In May, the rain falls for 11 days. Throughout May, 57.9mm (2.28") of precipitation is accumulated.

What is the sea water temperature in May in Dublin?

In May, the average sea temperature in Dublin is 10.4°C (50.7°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

What is the average length of the day in May in Dublin?

In Dublin, the average length of the day in May is 15.9h.

What month has the most sunshine in Dublin?

May has the most sunshine of the year in Dublin, with an average of 6.3h of sunshine.

How long on average sun shines in May in Dublin?

In May, the average sunshine is 6.3h.

What is the UV index reading in May in Dublin?

The average daily maximum UV index in May in Dublin, Ireland, is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to the UV radiation.
Average temperature in May - Dublin, Ireland
  • Average high temperature in May: 15.2°C

The warmest month (with the highest average high temperature) is July (20.2°C).
The month with the lowest average high temperature is January (8.8°C).

  • Average low temperature in May: 9°C

The month with the highest average low temperature is July (13.5°C).
Coldest months (with the lowest average low temperature) are January and February (3.9°C).

Average rainfall in May - Dublin, Ireland
  • Average rainfall in May: 57.9mm

The wettest month (with the highest rainfall) is October (76mm).
The driest month (with the lowest rainfall) is February (46.1mm).

Average rainfall days in May - Dublin, Ireland
  • Average rainfall days in May: 11 days

Months with the highest number of rainy days are January, October and December (12 days).
Months with the lowest number of rainy days are June and September (9 days).

Average sea temperature in May - Dublin, Ireland
  • Average sea temperature in May: 10.4°C

The best month for swimming (with the highest average sea temperature) is August (14.9°C).
The coldest month (with the lowest average sea temperature) is March (8.4°C).

Average daylight in May / Average sunshine in May - Dublin, Ireland
  • Average daylight in May: 15.9h

The month with the longest days is June (Average daylight: 16.9h).
The month with shortest days is December (Average daylight: 7.6h).

  • Average sunshine in May: 6.3h

The month with most sunshine is May (Average sunshine: 6.3h).
The month with least sunshine is December (Average sunshine: 1.7h).

Average UV index in May - Dublin, Ireland
  • Average UV index in May: 5

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January and December (UV index 0).