Climate and monthly weather forecast
Birr, Ireland


The climate of Birr

Situated in Ireland, Birr experiences a Marine west coast climate with a warm summer, consistent with the Köppen climate classification, Cfb. Sources of climatological data suggest that Birr's weather remains moderately cool throughout the year, hardly exceeding 19.6°C (67.3°F) in temperatures during the warmest month, which is July. During the coldest months which are January and February, temperatures can decrease to as low as 2°C (35.6°F). An acknowledged pattern in climate data portrays a relatively small variation in temperature over the course of the year.

Besides the general temperature, humidity also plays a significant aspect of the local climate. Humidity levels fluctuate between 65.1% in April and 84.5% in December. Throughout the year, Birr receives a considerable amount of rainfall, with the heaviest precipitation occurring in October and the least in April. The recorded data shows a consistent presence of rainfall, spread over 15 to 19 days each month. As for snowfall, it is quite rare and might occur mostly from January to March, with January having the most snowfall days at 3.5.

In terms of sunshine, Birr receives the most hours (5.1 hours per day on average) during the month of May and the least in December (1.4 hours per day). Daylight length peaks in June, offering approximately 16.9 hours, while in December it shortens to around 7.7 hours.

The best time to visit Birr

Those seeking milder temperatures, abundant sunshine and fewer rainfall days might find May to be the optimal month for a visit. With an average temperature of 15.5°C (59.9°F), relative humidity at 64.7%, rainfall measuring 60mm (2.36") across 16 days and an impressive 5.1 average hours of sunshine per day; May provides favorable conditions for outdoor tourist activities.

The worst time to visit Birr

Tourists who plan to avoid cooler temperatures, high humidity, more precipitation and fewer daylight hours should reconsider visiting in the winter months, particularly December. During December, the average temperature dips to 8.6°C (47.5°F), relative humidity climbs to 84.5%, rainfall intensifies to 84mm (3.31"), and daylight hours decrement drastically to 7.7 hours per day.

Spring weather in Birr

Spring clicks into action around March with temperatures ranging from 10.3°C (50.5°F) to 12.6°C (54.7°F) by the end of May. Humidity also drops to around 65.1%, benefiting those who prefer drier climates. Rainfall might be expected, with an average of 67mm (2.64") to 60mm (2.36") falling throughout 19 to 16 days in spring. This period typically experiences the year's highest recorded sunlight hours, with daylight hours increasing up to 15.9 hours in May.

Summer weather in Birr

Summertime, from June to August, is relatively mild in Birr, with temperatures fluctuating between 17.8°C (64°F) and 19.6°C (67.3°F). Despite being the warmest time of the year, tourists can still enjoy comfortable weather. Rainfall is moderately steady, with an average of 67mm (2.64") to 82mm (3.23") occurring over 16 to 18 days. Daylight hours are generous, ranging from 16.4 hours in July to 14.7 hours in August.

Autumn weather in Birr

During autumn, from September to November, temperatures start to cool down, varying from 17.1°C (62.8°F) to 10.4°C (50.7°F). There is a slight increase in humidity and more frequent rainfall with a maximum of 94mm (3.7") in October over 19 days. Daylight hours also reduce during this period, from 12.7 hours in September to 8.7 hours in November.

Winter weather in Birr

Winter in Birr arrives in December with temperatures dropping down between 8.6°C (47.5°F) to10.3°C (50.5°F) throughout the season. The number of rainfall days and amount increase. Generally, December experiences the highest relative humidity, reaching 84.5%. Snowfall is rare but can appear in negligible amounts. During winter, there is a significant reduction in daylight hours from 8.7 in November to a minimum of 7.7 hours in December.

Weather in January

January brings a chill to Birr, Ireland, as the New Year makes its frosty debut. The days are short, with minimal hours of daylight, creating a generally cold and damp feel. Rainfall remains high, often resulting in slightly slippery outdoor conditions. Weather in January »

Weather in February

The shortest month of the year, February, carries forward the winter chill from January. It begins the slight tilting of the balance towards spring, where the temperatures see a small rise. The short, cold days slowly start to lengthen, hinting at the approaching change of seasons. Weather in February »

Weather in March

March brings signs of warmer days. More daylight starts flooding the city, enhancing the will to enjoy outdoor activities. The melting snow, coupled with still-lingering winter chills, creates a unique juxtaposition in Birr's weather. Weather in March »

Weather in April

As spring takes full control in April, Birr experiences a noticeable leap in temperature compared to the previous month. While rainfall persists, days full of spring sunshine make for a pleasant atmosphere. Days continue growing longer, providing ample daylight for those seeking them out. Weather in April »

Weather in May

May brings out the sun in full in Birr, leading to increase in daylight hours. Breaths of warmer air whisper promises of the impending summer months. Flowers add colorful patches to the green-cloaked lands. While occasional rain showers still persist, they contribute to the flourishing spring scenery rather than hampering it. Weather in May »

Weather in June

Birr enjoys the melting warmth of early summer in June. It is the enticing season where the outdoor calls become strongest. The landscape turns vibrant, bathed under the abundant sunshine. A noticeable sunlight hour peak occurs, drenching the city in long sun-filled days. Weather in June »

Weather in July

July is the peak of summer in Birr and embraces the highest temperatures of the year. Temperatures remain pleasant, and the humming warmth makes for picture-perfect picnic days. July weather in Birr also notes long periods of daylight while the decreasing frequency of rainfall flag summer's peak. Weather in July »

Weather in August

In August, summer starts to wind down in Birr. However, temperatures continue to remain warm, and long daylight hours continue to hold sway. Nature remains at its greenest best, with occasional summer showers enhancing the charm. Days are long, but start to shorten, indicating the beginning of the transition towards autumn. Weather in August »

Weather in September

September marks the onset of autumn in Birr. The length of daylight begins to reduce, and temperatures start to climb down. The changing season brings a palette of warm colours to the city's landscapes. The mild weather and transition from warmth to cool bears a certain charm. Weather in September »

Weather in October

October sees a substantial drop in temperature along with the noticeable shrinking of daylight hours. The landscapes start painting with shades of fall foliage. No snowfall is recorded yet, but the weather starts leaning towards the cold side. Weather in October »

Weather in November

November's climate in Birr takes a chilly turn, preparing for winter's imminent arrival. The shorter daylight hours and falling temperatures orchestrate a marked change in the landscape. The vibrant hues of autumn begin to fade away, revealing a novel scenic beauty. Weather in November »

Weather in December

December brings winter back to Birr city, with the shortest daylight hours and increased rainfall. Christmas festivity envelopes the city, reflected in its chilly weather, marked by occasional spritzes of snow. The landscapes transition into the barren beauty of winter, and temperatures remain cold. Weather in December »

Frequently asked questions

What part of the year is the coldest in Birr?

January is Birr's coldest month, registering average high temperatures of 8.1°C (46.6°F) and lows of 2°C (35.6°F).

How much does it rain in Birr?

In Birr, Ireland, during the entire year, the rain falls for 206 days and collects up to 846mm (33.31") of precipitation.

When does it snow in Birr?

Months with snowfall in Birr are January through May, November and December.

What is the snowiest month in Birr?

January has the most snowfall days of the year in Birr, Ireland. Snow falls for 3.5 days.

How many days does it snow in Birr?

Throughout the year, in Birr, Ireland, there are 11.7 snowfall days.

What is the driest month in Birr?

April is the month with the least rainfall in Birr. Rain falls for 15 days and accumulates 55mm (2.17") of precipitation.

What is the least humid month in Birr?

With an average relative humidity of 64.7%, May is the least humid month in Birr.

What month has the most sunshine in Birr?

With an average of 5.1h of sunshine, May has the most sunshine of the year in Birr.

When it does not snow in Birr?

In Birr, snow does not fall in June through October.

When are the longest days in Birr?

June has the longest days of the year in Birr, Ireland, with an average of 16h and 54min of daylight.

What is the warmest month in Birr?

Birr's warmest month, July, registers temperatures that range from a high of 19.6°C (67.3°F) to a low of 11.6°C (52.9°F).

What is the wettest month in Birr?

October is the month with the most rainfall. Rain falls for 19 days and accumulates 94mm (3.7") of precipitation.

When is Daylight Saving Time (DST) in Birr?

On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from IST to GMT. Daylight Saving Time ends on Sunday, 30. March 2025, at 1:00 am, and the time zone reverts from GMT to IST.

What is the most humid month in Birr?

December is the most humid month, with an average relative humidity of 84.5%.

What is the month with the shortest days in Birr?

With an average of 7h and 42min of daylight, December has the shortest days of the year.

What is the month with the least sunshine in Birr?

December has the least sunshine of the year in Birr, Ireland, with an average of 1.4h of sunshine.

Average temperature
Birr, Ireland

Average temperature - Birr, Ireland

The warmest month (with the highest average high temperature) is July (19.6°C).
The month with the lowest average high temperature is January (8.1°C).

The month with the highest average low temperature is July (11.6°C).
The coldest months (with the lowest average low temperature) are January and February (2°C).


Average humidity
Birr, Ireland

Average humidity - Birr, Ireland

The month with the highest relative humidity is December (84.5%).
The month with the lowest relative humidity is May (64.7%).


Average rainfall
Birr, Ireland

Average rainfall - Birr, Ireland

The wettest month (with the highest rainfall) is October (94.2mm).
The driest month (with the least rainfall) is April (55mm).


Average rainfall days
Birr, Ireland

Average rainfall days - Birr, Ireland

The months with the highest number of rainy days are January, March and October (19 days).
The months with the least rainy days are February and April (15 days).


Average snowfall days
Birr, Ireland

Average snowfall days - Birr, Ireland

The month with the highest number of snowfall days is January (3.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).


Average daylight / Average sunshine
Birr, Ireland

Average daylight / Average sunshine - Birr, Ireland

The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 42min).

The month with the most sunshine is May (Average sunshine: 5h and 6min).
The month with the least sunshine is December (Average sunshine: 1h and 24min).


Birr, Ireland

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