Climate Insights for Carnew

Wicklow, Leinster, Ireland

Hottest
July
19°C peak
Coldest
January
3°C low
Wettest
October
96mm rain
Best to Visit
July, August
Mild temps & low rain

Climate Overview

The climate in Carnew is temperate. The average annual temperature is 10°C and approximately 939mm of precipitation falls per year. Carnew receives a notable amount of rainfall throughout the year, including during its driest month. Carnew is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, February, March, when temperatures can drop to 3°C. Light snow can occur between January and December.

Temperature

0° 5° 10° 15° 20° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 8° Average: 5° Min: 3° Feb Max: 9° Average: 6° Min: 3° Mar Max: 10° Average: 7° Min: 4° Apr Max: 12° Average: 9° Min: 5° May Max: 16° Average: 12° Min: 8° Jun Max: 18° Average: 14° Min: 10° Jul Max: 19° Average: 16° Min: 12° Aug Max: 19° Average: 16° Min: 12° Sep Max: 17° Average: 13° Min: 10° Oct Max: 14° Average: 11° Min: 8° Nov Max: 10° Average: 8° Min: 5° Dec Max: 9° Average: 6° Min: 4°
Max
Average
Min

Carnew sees moderate temperature variation throughout the year, ranging from 3°C to 19°C. July is the warmest month, though highs remain moderate at 19°C with a mean of 16°C. January is the coolest month, with minimum temperatures around 3°C and an average of 5°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between April and May, with a 3°C shift in average temperatures.

Precipitation

0mm 25mm 50mm 75mm 100mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 67mm Snow: 4mm Feb Precipitation: 74mm Snow: 2mm Mar Precipitation: 77mm Snow: 7mm Apr Precipitation: 71mm Snow: 0mm May Precipitation: 64mm Snow: 0mm Jun Precipitation: 71mm Snow: 0mm Jul Precipitation: 71mm Snow: 0mm Aug Precipitation: 78mm Snow: 0mm Sep Precipitation: 93mm Snow: 0mm Oct Precipitation: 96mm Snow: 0mm Nov Precipitation: 84mm Snow: 0mm Dec Precipitation: 92mm Snow: 2mm
Precipitation
Snow

Carnew is a moderately rainy area, receiving approximately 939mm of precipitation annually, which averages out to around 78mm per month. The wettest month is October, averaging 96mm of rainfall. September and December also tend to see above-average precipitation. The driest month is May, with just 64mm. That's 31mm less than October, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Light snowfall can occur between January and December, totalling around 16cm annually. March is the snowiest month with approximately 7cm.

Wind

0km/h 5km/h 10km/h 15km/h 20km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 15km/h Feb Wind Speed: 17km/h Mar Wind Speed: 15km/h Apr Wind Speed: 13km/h May Wind Speed: 12km/h Jun Wind Speed: 13km/h Jul Wind Speed: 12km/h Aug Wind Speed: 13km/h Sep Wind Speed: 13km/h Oct Wind Speed: 15km/h Nov Wind Speed: 15km/h Dec Wind Speed: 16km/h
Wind Speed

Carnew is mildly breezy, with an average annual wind speed of 14km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 17km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 12km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 16km/h in winter, 13km/h in spring, 13km/h in summer, 14km/h in autumn.

Seasons

Winter
Dec 21
Spring
Mar 20
Summer
Jun 21
Autumn
Sep 23

87 days until Winter

It is currently autumn in Carnew, which began on September 23, 2026. Carnew is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 19°C, while the coldest stretch bottoms out in January near 3°C. Winter is next, beginning on December 21, 2026 (87 days from now).

Spring

Temperatures range from 4 to 16°C. Precipitation is moderate at around 212mm for the season, averaging 71mm per month. Winds are generally light, averaging 13km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 10 to 19°C. Precipitation is moderate at around 220mm for the season, averaging 73mm per month. Winds are generally light, averaging 13km/h. Comfortable clothing with a light layer for cooler evenings is all you need.

Autumn

Temperatures range from 5 to 17°C. Precipitation is moderate at around 273mm for the season, averaging 91mm per month. Winds are generally light, averaging 14km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 3 to 9°C. Precipitation is moderate at around 233mm for the season, averaging 78mm per month. Expect around 8cm of snow accumulation during this period. Winds are moderate at around 16km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Best Time to Visit

Jan 5°
Feb 6°
Mar 7°
Apr 9°
May 12°
Jun 14°
Jul 16°
Aug 16°
Sep 13°
Oct 11°
Nov 8°
Dec 6°

The best time to visit Carnew is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 74mm per month. By contrast, January can be quite cold with temperatures dropping to 3°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

Monthly Climate Data

The table below shows monthly climate averages for Carnew based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
3 °C
8 °C
15 km/h
67 mm
4 cm
Feb
3 °C
9 °C
17 km/h
74 mm
2 cm
Mar
4 °C
10 °C
15 km/h
77 mm
7 cm
Apr
5 °C
12 °C
13 km/h
71 mm
0 cm
May
8 °C
16 °C
12 km/h
64 mm
0 cm
Jun
10 °C
18 °C
13 km/h
71 mm
0 cm
Jul
12 °C
19 °C
12 km/h
71 mm
0 cm
Aug
12 °C
19 °C
13 km/h
78 mm
0 cm
Sep Current
10 °C
17 °C
13 km/h
93 mm
0 cm
Oct
8 °C
14 °C
15 km/h
96 mm
0 cm
Nov
5 °C
10 °C
15 km/h
84 mm
0 cm
Dec
4 °C
9 °C
16 km/h
92 mm
2 cm
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Metric (°C, km/h)