Beach
Merrion Strand
Leinster · Ireland · Irish Sea
53.3169, -6.1944 · Booterstown, 1 km
- 15°Sea · August
- 18°High · July
- 6.6 hSunshine · May
Your month at the beach
Merrion Strand in January
- 8°CAir, daytime high4°C at night
- 9°CSea temperature
- 1.6 hSunshine a day
- 17 daysRainy days in the month86 mm in total
- 27 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Merrion Strand in February
- 8°CAir, daytime high4°C at night
- 8°CSea temperature
- 2.9 hSunshine a day
- 15 daysRainy days in the month70 mm in total
- 25 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Merrion Strand in March
- 9°CAir, daytime high4°C at night
- 8°CSea temperature
- 4.1 hSunshine a day
- 15 daysRainy days in the month70 mm in total
- 23 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Merrion Strand in April
- 11°CAir, daytime high6°C at night
- 9°CSea temperature
- 5.7 hSunshine a day
- 14 daysRainy days in the month61 mm in total
- 20 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Merrion Strand in May
- 14°CAir, daytime high8°C at night
- 11°CSea temperature
- 6.6 hSunshine a day
- 14 daysRainy days in the month67 mm in total
- 19 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Merrion Strand in June
- 16°CAir, daytime high11°C at night
- 13°CSea temperature
- 6.2 hSunshine a day
- 14 daysRainy days in the month76 mm in total
- 18 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Merrion Strand in July
- 18°CAir, daytime high12°C at night
- 15°CSea temperature
- 5.4 hSunshine a day
- 17 daysRainy days in the month80 mm in total
- 17 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Merrion Strand in August
- 18°CAir, daytime high12°C at night
- 15°CSea temperature
- 4.8 hSunshine a day
- 16 daysRainy days in the month91 mm in total
- 18 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Merrion Strand in September
- 16°CAir, daytime high11°C at night
- 15°CSea temperature
- 4.6 hSunshine a day
- 14 daysRainy days in the month76 mm in total
- 20 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Merrion Strand in October
- 13°CAir, daytime high9°C at night
- 13°CSea temperature
- 3.2 hSunshine a day
- 17 daysRainy days in the month102 mm in total
- 23 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Merrion Strand in November
- 10°CAir, daytime high7°C at night
- 12°CSea temperature
- 2.2 hSunshine a day
- 18 daysRainy days in the month106 mm in total
- 25 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Merrion Strand in December
- 8°CAir, daytime high5°C at night
- 11°CSea temperature
- 1.4 hSunshine a day
- 18 daysRainy days in the month97 mm in total
- 26 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
The beach itself
- PoorBathing water qualityOfficial EU classification, 2019 season
- 105Places to stay within 5 kmHotels, guest houses, apartments and campsites · OpenStreetMap
- 13 kmAirport: Dublin Airport (DUB)In a straight line; by road it is further
No reliable information yet on: wheelchair access, lifeguards.
January from 2020 to 2025
In January 2025 the sea averaged 8.7 °C — 0.4 °C below the 1991–2020 average.
1991–2020 average: 9.1 °C
1991–2020 average: 7.6 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
February from 2020 to 2025
In February 2025 the sea averaged 8.0 °C — about the same as the 1991–2020 average.
1991–2020 average: 8.1 °C
1991–2020 average: 7.5 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
March from 2020 to 2025
In March 2025 the sea averaged 8.5 °C — 0.7 °C above the 1991–2020 average.
1991–2020 average: 7.8 °C
1991–2020 average: 8.7 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
April from 2020 to 2025
In April 2025 the sea averaged 10.1 °C — 1.3 °C above the 1991–2020 average.
1991–2020 average: 8.8 °C
1991–2020 average: 10.9 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
May from 2020 to 2025
In May 2025 the sea averaged 13.2 °C — 2.6 °C above the 1991–2020 average.
1991–2020 average: 10.6 °C
1991–2020 average: 13.7 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
June from 2020 to 2025
In June 2025 the sea averaged 14.0 °C — 0.9 °C above the 1991–2020 average.
1991–2020 average: 13.1 °C
1991–2020 average: 16.4 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
July from 2020 to 2025
In July 2025 the sea averaged 15.5 °C — 0.8 °C above the 1991–2020 average.
1991–2020 average: 14.7 °C
1991–2020 average: 17.9 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
August from 2020 to 2025
In August 2025 the sea averaged 16.0 °C — 0.9 °C above the 1991–2020 average.
1991–2020 average: 15.1 °C
1991–2020 average: 17.7 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
September from 2020 to 2025
In September 2025 the sea averaged 14.8 °C — about the same as the 1991–2020 average.
1991–2020 average: 14.5 °C
1991–2020 average: 16.1 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
October from 2020 to 2025
In October 2025 the sea averaged 13.6 °C — about the same as the 1991–2020 average.
1991–2020 average: 13.4 °C
1991–2020 average: 13.3 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
November from 2020 to 2025
In November 2025 the sea averaged 12.2 °C — about the same as the 1991–2020 average.
1991–2020 average: 12.1 °C
1991–2020 average: 10.1 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
December from 2020 to 2025
In December 2025 the sea averaged 10.3 °C — about the same as the 1991–2020 average.
1991–2020 average: 10.6 °C
1991–2020 average: 8.2 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
When to go
1991–2020 averagesThe year at a glance
- Jan9°2 h86 mm
- Feb8°3 h70 mm
- Mar8°4 h70 mm
- Apr9°6 h61 mm
- May11°7 h67 mm
- Jun13°6 h76 mm
- Jul15°5 h80 mm
- Aug15°5 h91 mm
- Sep15°5 h76 mm
- Oct13°3 h102 mm
- Nov12°2 h106 mm
- Dec11°1 h97 mm
Each card is a month. The colour is the sea temperature, on the same scale as the map; in bold, the two best months for each.
Sea temperature
1991–2020 averagesClimate through the year
1991–2020 averagesRain
Sunshine
Sunshine hours are estimated from measured solar radiation, not observed directly.
Month by month
1991–2020 averagesEvery month at Merrion Strand: air, sea, rain and sunshine. Averages for 1991–2020.
| Month | High°C | Low°C | Sea°C | Rainmm | Rainy daysdays | Sunshineh/day | Windkm/h |
|---|---|---|---|---|---|---|---|
| January | 8 | 4 | 9 | 86 | 17 | 1.6 | 27 |
| February | 8 | 4 | 8 | 70 | 15 | 2.9 | 25 |
| March | 9 | 4 | 8 | 70 | 15 | 4.1 | 23 |
| April | 11 | 6 | 9 | 61 | 14 | 5.7 | 20 |
| May | 14 | 8 | 11 | 67 | 14 | 6.6 | 19 |
| June | 16 | 11 | 13 | 76 | 14 | 6.2 | 18 |
| July | 18 | 12 | 15 | 80 | 17 | 5.4 | 17 |
| Augustwarmest sea | 18 | 12 | 15 | 91 | 16 | 4.8 | 18 |
| September | 16 | 11 | 15 | 76 | 14 | 4.6 | 20 |
| October | 13 | 9 | 13 | 102 | 17 | 3.2 | 23 |
| November | 10 | 7 | 12 | 106 | 18 | 2.2 | 25 |
| December | 8 | 5 | 11 | 97 | 18 | 1.4 | 26 |
Swipe sideways to see the other columns.
Photos
Photos shared by their authors on Wikimedia Commons, with its colours adjusted.
About these numbers
Averages are for 1991–2020; the recent years (2020–2025) are what actually happened. Neither is today's weather.
| What | Where it comes from | Nearest measurement |
|---|---|---|
| Air, rain and sunshine | NASA POWER | 21 km away |
| Sea temperature | NOAA OISST v2.1, 1991–2020 | 8 km away |
| 2020–2025, month by month | NASA POWER · NOAA OISST v2.1 | 21 km away |
| Bathing water quality | European Environment Agency | 0.6 km away |
| Lifeguards and places to stay | OpenStreetMap | within 1–5 km |
| Nearest airport | OurAirports | straight-line distance |
| Image at the top | Sentinel-2 cloudless (EOX) | at this spot |