Wholesale electricity pricing now (and a look back across 5 years)

I was curious to why the recent high Agile and Tracker pricing so I started to dig into my own wholesale pricing data (Energy Stats UK).

The attached graphs show

1. How recent wholesale electricity pricing is on the rise.

2. The 5 January peaks from the last 5 years

3. Month by month daily averages across the last 5 years (obviously skewed by the energy crisis)

These are the averages for each calendar month, with all years combined and based on daily averages (price per kWh).

January 10.17
February 9.02
March 10.01
April 8.32
May 7.08
June 7.49
July 8.88
August 10.82
September 10.79
October 8.79
November 9.66
December 11.60

Is January just always a high month? cold, no sun, higher gas demand (which can drive electricity prices)?