Monthly weather forecast and climate
Shannon, Ireland

Weather in January

January, the same as December, in Shannon, Ireland, is another chilly winter month, with temperature in the range of an average low of 3.1°C (37.6°F) and an average high of 7.8°C (46°F). January is the coldest month, with an average high-temperature of 7.8°C (46°F) and an average low-temperature of 3.1°C (37.6°F). Weather in January »

Weather in February

The last month of the winter, February, is another chilly month in Shannon, Ireland, with temperature in the range of an average high of 8.3°C (46.9°F) and an average low of 2.9°C (37.2°F). In Shannon, the average high-temperature in February is essentially the same as in January - a still frosty 8.3°C (46.9°F). Weather in February »

Weather in March

March, the first month of the spring, in Shannon, is still a chilly month, with average temperature fluctuating between 9.6°C (49.3°F) and 2.9°C (37.2°F). In Shannon, the average high-temperature in March is almost the same as in February - a still chilly 9.6°C (49.3°F). Weather in March »

Weather in April

April in Shannon, Ireland, is a fresh spring month, with average temperature ranging between max 12.3°C (54.1°F) and min 4.3°C (39.7°F). In April, the average high-temperature is essentially the same as in March - a fresh 12.3°C (54.1°F). Weather in April »

Weather in May

The last month of the spring, May, is a moderate month in Shannon, Ireland, with temperature in the range of an average high of 14.3°C (57.7°F) and an average low of 6.6°C (43.9°F). In May, the average high-temperature is relatively the same as in April - a mild 14.3°C (57.7°F). Weather in May »

Weather in June

June, the first month of the summer, in Shannon, is a comfortable month, with average temperature varying between 17°C (62.6°F) and 9°C (48.2°F). In Shannon, the average high-temperature in June is almost the same as in May - an enjoyable 17°C (62.6°F). Weather in June »

Weather in July

July, like June, in Shannon, Ireland, is another comfortable summer month, with average temperature fluctuating between 11.1°C (52°F) and 18°C (64.4°F). The warmest month is July, with an average high-temperature of 18°C (64.4°F) and an average low-temperature of 11.1°C (52°F). Weather in July »

Weather in August

The last month of the summer, August, is also an enjoyable month in Shannon, Ireland, with temperature in the range of an average low of 10.9°C (51.6°F) and an average high of 17.5°C (63.5°F). In August, the average high-temperature is practically the same as in July - a still comfortable 17.5°C (63.5°F). Weather in August »

Weather in September

The first month of the autumn, September, is still a mild month in Shannon, Ireland, with average temperature ranging between min 9.3°C (48.7°F) and max 15.8°C (60.4°F). In September, the average high-temperature is relatively the same as in August - a mild 15.8°C (60.4°F). Weather in September »

Weather in October

October, the same as September, in Shannon, Ireland, is another mild autumn month, with average temperature ranging between max 13.5°C (56.3°F) and min 7.5°C (45.5°F). In October, the average high-temperature is practically the same as in September - a still mild 13.5°C (56.3°F). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Shannon, Ireland, with average temperature varying between 9.6°C (49.3°F) and 4.9°C (40.8°F). In Shannon, the average high-temperature marginally drops, from a moderate 13.5°C (56.3°F) in October, to a frosty 9.6°C (49.3°F). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in Shannon, Ireland, with average temperature fluctuating between 8°C (46.4°F) and 3.5°C (38.3°F). In December, the average high-temperature is essentially the same as in November - a still frosty 8°C (46.4°F). Weather in December »
[Resources]

FAQ

What is the coldest month in Shannon?

The coldest month is January, with an average high-temperature of 7.8°C (46°F) and an average low-temperature of 3.1°C (37.6°F).

How many days does it rain in Shannon?

In Shannon, during the entire year, the rain falls for 204.6 days and collects up to 512mm (20.16") of precipitation.

When does it snow in Shannon?

January through March and December are months with snowfall.

How much does it snow in Shannon?

Throughout the year, in Shannon, there are 3.2 snowfall days, and 57mm (2.24") of snow is accumulated.

What is the month with the least sunshine in Shannon?

Months with the least sunshine are January and December, with an average of 4h of sunshine.

What are the months with the lowest UV index in Shannon?

Months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2.

When is the sea coldest in Shannon?

The month with the coldest seawater in Shannon, Ireland, is March, with an average sea temperature of 9.4°C (48.9°F).

What is the least humid month in Shannon?

April is the least humid month, with an average relative humidity of 84%.

When it does not snow in Shannon?

In Shannon snow does not fall in April through November.

What are the months with the highest UV index in Shannon?

May and June, with an average maximum UV index of 4, are months with the highest UV index.

When are the longest days in Shannon?

The month with the longest days in Shannon, Ireland, is June, with an average of 16.8h of daylight.

What month has the most sunshine in Shannon?

With an average of 7.3h of sunshine, June has the most sunshine of the year.

What is the warmest month in Shannon?

The warmest month is July, with an average high-temperature of 18°C (64.4°F) and an average low-temperature of 11.1°C (52°F).

When is the sea warmest in Shannon?

August is the month with the warmest seawater, with an average sea temperature of 15.8°C (60.4°F).

What is the driest month in Shannon?

September is the month with the least rainfall. Rain falls for 14.9 days and accumulates 33mm (1.3") of precipitation.

What is the most humid month in Shannon?

Months with the highest humidity are November and December, with an average relative humidity of 90%.

What is the wettest month in Shannon?

December is the month with the most rainfall in Shannon. Rain falls for 16.1 days and accumulates 56mm (2.2") of precipitation.

When does it snow the most in Shannon?

December is the month with the most snowfall. Snow falls for 0.6 days and accumulates 21mm (0.83") of snow.

What is the month with the shortest days in Shannon?

With an average of 7.7h of daylight, December has the shortest days of the year.

Average pressure
Shannon, Ireland

Average pressure - Shannon, Ireland

The month with the highest atmospheric pressure is May (1016mbar).
The month with the lowest atmospheric pressure is November (1008.3mbar).

[Resources]

Average wind speed
Shannon, Ireland

Average wind speed - Shannon, Ireland

The windiest month (with the highest average wind speed) is February (19km/h).
The calmest month (with the lowest average wind speed) is July (13.3km/h).

[Resources]

Average humidity
Shannon, Ireland

Average humidity - Shannon, Ireland

Months with the highest relative humidity are November and December (90%).
The month with the lowest relative humidity is April (84%).

[Resources]

Average rainfall
Shannon, Ireland

Average rainfall - Shannon, Ireland

The wettest month (with the highest rainfall) is December (56mm).
The driest month (with the least rainfall) is September (33mm).

[Resources]

Average rainfall days
Shannon, Ireland

Average rainfall days - Shannon, Ireland

The month with the highest number of rainy days is August (20.4 days).
The month with the least rainy days is February (14.8 days).

[Resources]

Average snowfall
Shannon, Ireland

Average snowfall - Shannon, Ireland

The month with the highest snowfall is December (21mm).
Months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

[Resources]

Average snowfall days
Shannon, Ireland

Average snowfall days - Shannon, Ireland

The month with the highest number of snowfall days is February (0.9 days).
Months with the least snowfall days are May, June, July, August, September, October and November (0 days).

[Resources]

Average sea temperature
Shannon, Ireland

Average sea temperature - Shannon, Ireland

The best month for swimming (with the highest average sea temperature) is August (15.8°C).
The coldest month (with the lowest average sea temperature) is March (9.4°C).

[Resources]

Average daylight / Average sunshine
Shannon, Ireland

Average daylight / Average sunshine - Shannon, Ireland

The month with the longest days is June (Average daylight: 16.8h).
The month with the shortest days is December (Average daylight: 7.7h).

The month with the most sunshine is June (Average sunshine: 7.3h).
Months with the least sunshine are January and December (Average sunshine: 4).

[Resources]

Average sunshine days
Shannon, Ireland

Average sunshine days - Shannon, Ireland

The month with the most sunshine days is December (12.6 days).
The month with the least sunshine days is July (7.6 days).

[Resources]

Average UV index
Shannon, Ireland

Average UV index - Shannon, Ireland

Months with the highest UV index are May and June (UV index 4).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

[Resources]

Average visibility
Shannon, Ireland

Average visibility - Shannon, Ireland

Months with the highest visibility are January, February, March, April, November and December (9km).
Months with the lowest visibility are May, June, July, August, September and October (8km).

[Resources]