Wales mean temperature
Wales mean temperature stood at 14.6 °C in Sep 2026, according to Met Office — UK climate and HadCET series. It is one of the indicators in the Weather table (Value · Monthly), with a complete series running from Jan 1884 to Sep 2026. The complete series with an interactive chart, free to download.
This indicator in the Weather table
| Indicator | 09-2026 | 08-2026 | 07-2026 | 06-2026 | 05-2026 | 04-2026 | 03-2026 | 02-2026 | 01-2026 | 12-2025 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean temperature | |||||||||||
| Wales | 14.6 | 16.8 | 17.8 | 15.9 | 12.4 | 9.3 | 7.5 | 6.2 | 4.1 | 6.3 | |
| Scotland | 12.3 | 13.8 | 14.5 | 13 | 9.6 | 7.4 | 5.4 | 3.7 | 2.2 | 4.6 |
Understanding wales mean temperature
Area-weighted interpolation of weather station networks across Wales produces the monthly mean air temperature for the territory. The index combines daily maximum and minimum thermometer readings within the national border, excluding coastal marine zones. Compared with sibling series covering larger territories, this measure captures the distinct topographic and maritime influences acting upon a compact, western-facing landscape. It diverges from high and low temperature variants by offering a balanced view of overall thermal energy rather than peak extremes.
Analysts evaluating these figures should focus on annual matching comparisons to isolate genuine climatic shifts from regular seasonal cycles. Initial releases are provisional and may be revised following exhaustive quality assurance checks on station logs. Direct comparisons with nationwide figures can be misleading due to distinct regional topography and Atlantic weather exposure.
Frequently asked questions
- What area is included in the Welsh mean temperature calculation?
- The series covers the entire geographic territory of Wales using gridded station data.
- Why should consecutive months not be compared directly?
- Predictable seasonal changes dominate month-to-month transitions, obscuring longer-term climatic patterns.
- Are marine observations included in the territorial average?
- No, surrounding coastal waters and open seas are excluded from the terrestrial grid.