The climate of Shannon
Shannon,
Ireland experiences a Marine West Coast climate, notably characterized by the warm summer, according to the Köppen-Geiger climate classification. Geographically positioned on the western coast of Ireland, this location typically encounters mild, humid and overcast weather.
Throughout the year, the temperatures rarely dip below the freezing point. Average high temperatures range from 7.8°C (46°F) in the beginning of the year and gradually increase to around 18°C (64.4°F) at the peak of summer before falling back to around 8°C (46.4°F) by year's end. Conversely, the average low temperatures shift from 3.1°C (37.6°F) at the start of the year, climbing to 11.1°C (52°F) during summer and decline to 3.5°C (38.3°F) by
December.
Relative humidity remains relatively high all year, beginning at 89% in
January and dipping slightly to 84% in
April, before ascending back to 90% by
November and December. Correspondingly, the monthly average rainfall varies from 33mm (1.3") in
September to 56mm (2.2") in December with an associated increase in rainfall days from 14.8 in
February to 20.4 in
August. Snowfall is scarce, with only measurable amount of 21mm (0.83") occurring in December and January.
One unusual weather pattern includes no recorded snowfall from April to November. One may evidently observe the shifting amount of daylight, where it reaches a yearly high of 16.8 hours in
June and falls to a low of 7.7 hours in December.
The best time to visit Shannon
The best time to visit
Shannon would arguably be during the late spring and early summer months from
May to
July. This period offers a balmy temperature range between 12.3°C (54.1°F) to 18°C (64.4°F), paired with increased daylight hours, stretching from 14 hours to 16.8 hours. Furthermore, the sea temperature is relatively warm during these months, varying from 11.4°C (52.5°F) to 15.1°C (59.2°F), allowing for enjoyable seaside activities.
The worst time to visit Shannon
The least favorable period for visiting
Shannon can be regarded as the winter months from
December to
February. The combination of low temperatures, varying from 7.8°C (46°F) to 8.3°C (46.9°F), short daylight hours dwindling from 7.7 hours to 8.3 hours, and potentially disruptive snowfall makes leisure activities considerably less enjoyable.
Spring weather in Shannon
Spring in
Shannon, extending from
March to
May, observes a gradual rise in temperatures. March records a high of 9.6°C (49.3°F) and a low of 2.9°C (37.2°F), whereas these change to 14.3°C (57.7°F) and 6.6°C (43.9°F) by May. This season's rainfall falls between 35mm (1.38") to 39mm (1.54"), whereas relative humidity drops slightly from 85% in March to 84% in
April and then increases slightly to 85% in May. Shannon experiences longer daylight hours, expanding from 11.9 hours in March to 15.8 hours in May, coupled with ample sunshine hours, ranging from 5 hours to 6.1 hours.
Summer weather in Shannon
Shannon's summer months, from
June to
August, illustrate weather conditions that are quite favorable. Average high temperatures fluctuate from 17°C (62.6°F) to 18°C (64.4°F), while lows temperately vary between 9°C (48.2°F) and 11.1°C (52°F). Rainfall ranges from 41mm (1.61") to 50mm (1.97"), and Shannon sees sunlight for approximately 15.8 hours to 16.3 hours daily. The sea temperatures mature at this time of the year, elevating to between 15.1°C (59.2°F) and 15.8°C (60.4°F).
Autumn weather in Shannon
Autumn, extending from
September to
November, in
Shannon brings a gradual cooling of temperatures, ranging from a high of 15.8°C (60.4°F) in September to 9.6°C (49.3°F) in November. Correspondingly, low temperatures fluctuate from 9.3°C (48.7°F) in September to 4.9°C (40.8°F) in November. Rainfall slightly increases from 33mm (1.3") to 53mm (2.09") during these months. While daylight hours decrease from 12.7 hours in September to 8.7 hours in November, sunshine hours slowly drop from 5.6 hours to 4.1 hours.
Winter weather in Shannon
Shannon's winter season from
December to
February represents the coldest and shortest days of the year. High temperatures decline from 8°C (46.4°F) in December to 7.8°C (46°F) in
January and then rise to 8.3°C (46.9°F) in February. Low temperatures sway from 3.5°C (38.3°F) to 3.1°C (37.6°F) within this period. Snowfall of 21mm (0.83") and 18mm (0.71") can be expected in December and January, respectively. The daylight hours during these months decrease to between 7.7 hours and 8.3 hours.
Weather in January
The onset of the year sees
Shannon,
Ireland, enticing with its relative cold.
January's temperatures present a marked difference from the mild
December, with daily averages swinging between 3.1°C (37.6°F) at night and 7.8°C (46°F) during the day.
Weather in January »Weather in February
Advancing into
February,
Shannon’s weather depicts a subtle shift in temperature compared to
January. The city remains cold, but a marginal increase in the daytime temperature to 8.3°C (46.9°F) offers a bit of solace to the inhabitants.
Weather in February »Weather in March
March beckons spring with open arms in
Shannon, offering a warmer welcome than
February. This month observes the temperature reaching a comfortable 9.6°C (49.3°F) during the day, hinting at the departure of winter. The snowfall level becomes unnoticeable, and rainfall slightly subsides.
Weather in March »
Weather in April
April is the month where
Shannon starts to bustle with activity, drawing in more visitors due to improved weather conditions. The rise in temperature from
March to 12.3°C (54.1°F) during the day is noticeable, marking an indisputable advent of spring.
Weather in April » Weather in May
The arrival of
May induces significant changes in the weather of
Shannon. Transitioning from
April, the city witnesses the real essence of spring as daytime temperatures elevate to a comfortable 14.3°C (57.7°F). Rainfall remains consistent throughout the month while snowfall is relatively absent.
Weather in May »Weather in June
Shannon further warms up in
June, marking the onset of the summer season. The most evident change from
May is the noticeable spike in daytime temperature, which ascends to 17°C (62.6°F). In spite of summer, rainfall occurs throughout the month.
Weather in June »
Weather in July
July is the heart of summer in
Shannon, manifesting the warmest weather so far. The arrival of this month brings an increase in temperature to a peak high of 18°C (64.4°F) during daytime. Despite the elevated temperatures, the rain showers continue.
Weather in July » Weather in August
August represents the final full month of summer in
Shannon, wherein the daytime temperature perceivably starts to dip, going down from
July’s peak to 17.5°C (63.5°F). Upsurge in rainfall is noted when compared to July, though it does little to dampen the city's summer spirit.
Weather in August » Weather in September
Transitioning into
September,
Shannon’s weather manifests autumn's arrival with a decrease in temperature, dropping to 15.8°C (60.4°F) during the day. The rainfall decreases slightly compared to the previous month, thus ushering in more dry days.
Weather in September »
Weather in October
October's weather in
Shannon is characterized by a palpable feel of autumn as the day temperatures fall further to 13.5°C (56.3°F). As the climate transitions from
September, rainfall becomes slightly more frequent. The days become progressively shorter as the city mates with the autumn season completely.
Weather in October » Weather in November
As winter subtly creeps in,
November witnesses a significant dip in temperature in
Shannon falling to 9.6°C (49.3°F) during the day. It becomes the rainiest month of the year, with a high downpour amount of 53mm (2.09"). Despite the colder weather and increased rainfall, it enhances the city's splendid appeal.
Weather in November »Weather in December
December greets
Shannon with the advent of winter, introducing colder conditions as compared to
November. With the daytime temperature dropping to 8°C (46.4°F), winters make a grand entry. Rainfall is consistent, keeping up to November's precedence.
Weather in December » [Resources]