Sryan Bruen

Mount Dillon reported the first air frost of the season in the Republic of Ireland this morning with an air temp of -0.6C.

This is earlier than average but is well within the expected timeframe considering natural variability whereas 2024 was the earliest since 2010.

A successful night for my first camera club talk with Rathcoole Camera Club. Was a great experience to share my knowledge and background in weather as a means of getting every landscape shot to be perfect and of high standard conditions wise.

📸 Finamaria

Epic sunrise this morning at Laytown, Meath.

The North Bank Lighthouse under a sky of noctilucent clouds.

We maybe well past NLC season but I'm still unloading and recovering from this epic June night.

Recent photos from Tuesday of the Peruvian Navy ship BAP Unión leaving Dublin.

Rather crazy how the Sep CET is tracking this much above average (1961–1990) yet it’s felt positively chilly to me. A sign of how much I’ve been acclimatised or getting too comfortable with the extraordinary persistence summer warmth.

Glad this was posted to emphasise more heavily just how much summer 2025 was elevated by the cloudy warm nights which the original summer statement did not do well in.

Good communication and messaging can do a lot to public perception but many sadly you will never convince.

The summer of 1976 is often regarded as the benchmark for extreme British summers.

However, the climate in which it occurred was fundamentally different from today’s.

Read all the details: www.metoffice.gov.uk/blog/2025/ho...

I used both Met.ie historical database and CSO to find the years of the warmest summers for the stations above.

Some stations such as Markree, Oak Park and Ballyhaise have been combined with their old manual counterparts.

Even counting for the fact that some of the stations weren't recording in 1995, only 5 of the current 25 primary stations had a record-breaking summer. So the other 20 had warmer summers in years such as 1995, 2006 and 2018. 6/

There were many more stations on a widespread scale that had 1995 as their record warmest summer. Therefore the overall headlines going around that 2025 was the warmest summer on record in Ireland is somewhat misleading and requires further explanation. 5/

In the case of summer 2025, this creates a problem as the less inputs you have, the more easily it can be skewed when averaging out. It just happens that at least 2 (possibly 3) of those 5 had a record-breaking warm summer but as mentioned and via the map above... 4/

that can be considered for such a series without interpolating. Not many stations were recording in 1900 that are still recording in present day. So some compromises have to be made for such a series and that being only 5 stations form part of its calculation. 3/

The Island of Ireland series is a great reference to determine climate change trends but for absolute records like this, it's not overly useful due to how little inputs there are. There's only 5 stations considered for it. This is because there's very few stations... 2/

This is not a complete map but this shows the year of the warmest summer mean temperature on record for a selection of Irish stations. 1995 is still by far the warmest summer on Irish record on a more nationwide scale compared to the Met headlines that have been spreading. 1/

Summer 2025 was provisionally the warmest summer on record since 1900 in Ireland narrowly beating the all-time king that is 1995. The difference made by a much warmer June than 1995 overall (it was only the last 10 days of June 1995 that were warm).

2025 hasn't featured the extremes of 1976 but it has obliterated it in consistency.

Also an interesting fact... if we took out the extraordinary heatwave that everybody remembers (and rightly so) from summer 1976 of 15 consecutive days of 90F in England (23 June to 7 July), the season has a CET of 16.8C.

Those 15 days gave a difference of nearly a whole degree!

2025 will only be the 2nd/*3rd time that every month of meteorological summer has had a Central England Temperature of at least 17.0C.

The other time was back in 1826. I put asterisk and 3rd because 1976 on the original CET managed it too before June 1976 value was decreased.

2010 was the most recent year to have no tropical nights. 2022 recently had 10 tropical nights recorded in the UK but 1947 and 1995 had 12!

Looks like St. Catherine's Point on the Isle of Wight had tropical night conditions with a min of 20.3C between 09 UTC yesterday morning and 09 UTC this morning.

This makes it the 2nd tropical night in 2025 so far in the UK, not a remarkable figure at all but will we have more?

1868 and 1947 remain the only years where every month in the extended summer season (May to September) had 30C or greater in the UK.

2025 will soon join the years where the UK had a max temp of 30C or greater in all three meteorological summer months (JJA).

(The further back the more the data becomes limited so may not be the actual max for that month and some pre-1961 converted from whole Fahrenheit).

Figured this would be a good time to see what the record highest meteorological summer (June-August) wind gusts are in UK & Ireland weather station data.

To reduce the impact of gaps in data, a weighted blending process has been applied, hence the smoothed appearance in Ireland.

Malin Head with the max gust of 104 km/h for #StormFloris as of now in Ireland.

Also a sustained wind of 76 km/h, its highest since 80 km/h during storms Ellen and Francis in August 2020. Only 9 August days here have had a stronger sustained wind since 1955.

It will also be interesting to see the minimum pressure for #StormFloris. The lowest August mean sea level pressure on record in the UK since 1960 is 972.8 hPa on 30th August 1992.

Athenry (Galway) in Ireland had 966.4 hPa on 20th August 2020 during Storm Ellen.

The most significant August storms based on number of UK stations recording gusts >50 kts (58 mph) from 1961-2020, from Met Office publication of Storms Ellen and Francis from August 2020.

"Fastnet Storm" of Aug 1979 being the most significant followed by Charley in 1986.

Tried digging to find a precedent to #StormFloris for August and the closest I can find is 24th August 2005 which was a good bit further north but North Rona Island (98m ASL) had a wind gust of 101 mph.

Even Needles Old Battery (IOW) reported 72 mph supposedly.

40 years ago today into the next day, Ireland experienced one of its most severe thunderstorms in living memory.

Broadcast via RTÉ

Pretty insane tbh it's been 3 years. Still very fresh on my mind.