St Hilary & the Arians. The Coldest Day of the Year? January 13th

St Hilary’s Day is traditionally the coldest day in the year. Of course, the coldest day is normally in January, or February. But sometimes it is in December and occasionally in November, or March.

In 2024 the coldest day, was at Dalwhinnie, 17th January at -14.0C. In 2023, it was -16.0C, recorded at Altnaharra on the 9th of March. The coldest day so far in 2025 was -18.9C Altnaharra 11 January. Both places are in the Scottish Highlands.

At the bottom of the post are the coldest days in the UK since 2000.

St Hilary & the Arians

St Hilary (born 315) was the Bishop of Poitiers in France, where he died around 367 AD. He was a vigorous opponent of the Arian Heresy, which swept through the Catholic world in the late Roman period. Catholic doctrine was that God – the Father, Son and Holy Ghost was a Trinity. Arius took the view that: “If the Father begat the Son, then he who was begotten had a beginning in existence, and from this it follows there was a time when the Son was not.” Seems like solid logic, doesn’t it? But this means that for Arians, Jesus was not equal with God. Another question at the time was, ‘Was Jesus divine?’

Eventually, the ecumenical First Council of Nicaea of 325, declared Arianism to be a heresy. This was during the reign of Constantine the Great. Arianism was strong in the Eastern Empire and was accepted by Constantine’s son. It continued as a major influence, especially among the Goths and Vandals who were an increasingly important force in the Late Roman Empire.

The Church takes the position that there is one God existing in three coequal, coeternal, consubstantial divine persons (wikipedia). It’s sobering to think how many people were martyred over these arcane attempts to maintain a coherent monotheism despite this difficult idea of three entities being one God. For more heresy please look at my post on the Pelagian Heresy and St Germanus.

Hilary Term

St Hilary was a scholar and is one of those rare early Saints not to be horrifically martyred. We remember him in the UK with the dedication of a few Churches, particularly in Wales. He has also given his name to one of the terms of the academic year. At least for Oxford. There, Hilary Term is their name for the ‘spring term’ and this year Hilary began on the 7th January.

Oxford shares the nomenclature of Michaelmas, Hilary and Trinity. Cambridge and London School of Economics share Michaelmas but call the next term ‘Lent term’ and then ‘Summer Term’. Most other universities split the academic year into three terms (autumn, spring and summer) across two academic semesters. 

For most of us ‘terms’ are a thing of our youth. For the rest of our lives we participate in the hard slog of ‘real life’. Real life is not split into terms. It is work, work, work, separated by a few short breaks. But not for the High Court and the Court of Appeal. No! They have stuck to the idea of the term. The legal establishment also uses ‘Hilary.’ This year the legal year is:

Hilary: Monday 13 January to Wednesday 16 April
Easter: Tuesday 29 April to Friday 23 May
Trinity: Tuesday 3 June to Thursday 31 July
Michaelmas: Wednesday 1 October to Friday 19 December

Too much like hard work, for the lords of Justice! Although to do them credit they have four terms.

As I travel around Britain I find a lot of historic ‘Stately Homes’ which were bought by eminent Judges or lawyers. The legal establishment is based at the four Inns of Court: Lincoln’s Inn, Grey’s Inn, Inner Temple and Middle Temple. These were founded in London in the medieval period. They provided homes and well as offices (chambers) for the lawyers. The lawyers stayed in them during the legal terms. About 30 weeks out of the 52 available in the year. Then they would go off to their country estates to recuperate and enjoy the fruits of their privileged position.

Coldest days in the UK

(according to https://www.trevorharley.com/coldest-days-of-each-year-from-1875.html and in centigrade.)

2000 -15.0 Dalmally (Argyll) 30 December

2001 -21.7 Kinbrace (Sutherland) 3 March

2002 -16.1 Grantown 2 January

2003 -18.3 Aviemore 7 January

2004 -15.2 Kinbrace (Sutherland) 19 December

2005 -13.2 Ravensworth (North Yorks.) 29 December

2006 -16.4 Altnaharra 2 March

2007 -13.0 Aboyne 22 December

2008 -12.9 Aviemore 30 December

2009 -18.4 Aviemore 9 February, Braemar 29 December

2010 -22.3 Altnaharra 8 January

2011 -13.0 Althnaharra 8 January

2012 -18.3 Chesham (Bucks.) 11 February

2013 -13.4 Marham (near Norwich, Norfolk) 16 January

2014 -9.0 Cromdale (Morayshire) 27 December

2015 -12.5 Tulloch Bridge, Glascarnoch 19 January

2016 -14.1 Braemar 14 February

2017 -13.0 Shawbury (Shropshire) 12 December

2018 -14.2 Faversham (Kent) 28 February

2019 -15.4 Braemar 1 February

2020 -10.2 Braemar 13 February and Dalwhinnie (30 December)

2021 -23.0 Braemar 11 February

2022 -17.3 Braemar 13 December

If you look at the long list you will see that Braemar and Althnaharra, both in the Scottish Highlands are the most common places to host the coldest day in the UK.

First Published Jan 13th 2024, revised 2025