Updated: 2026-08-29
That is the hottest week in Manchester’s weather records since 1947, measured at the Met Office’s Rochdale station. During those seven days, the mercury peaked at 30.6 °C on 14 August 2022.
When we talk about “hottest week” here, we mean the seven consecutive days with the highest average daily maximum temperature — not a single day, but the relentless heat that defines a spell. The week that began on 9 August 2022 and ran through 15 August 2022 produced a mean maximum of 28.36 °C, a figure that has not been matched in the 79-year period we have analysed (1947–2025).
That summer week was exceptional for the north-west of England. The peak of 30.6 °C occurred on Sunday 14 August, but the entire week sat well above the long-term August norm. For comparison, the average daily maximum for August at this station is 19.1 °C — the 2022 event was a stark reminder that Manchester can experience heat quite unlike its usual maritime mildness.
Heatwaves are defined by their persistence as much as their peak. While a single hot day can be remarkable, it’s the sustained warmth that really threatens health and infrastructure. The 2022 week held an average of 28.36 °C over seven full days — that’s warmth you feel from late morning to sunset, day after day, without the usual overnight cool-down we associate with the Pennines.
To put that top week into context, here are the next four warmest weeks in the same 1947–2025 record. You’ll notice that three of the five come from the same August 2022 spell — small shifts in the seven-day window capture slightly different averages, which shows how consistently hot that period was.
| Week starting | Week ending | Mean daily max (°C) |
|---|---|---|
| 2022-08-09 | 2022-08-15 | 28.36 |
| 2022-08-08 | 2022-08-14 | 28.31 |
| 2022-08-10 | 2022-08-16 | 27.84 |
| 2021-07-16 | 2021-07-22 | 27.51 |
| 2023-09-04 | 2023-09-10 | 27.23 |
That cluster in 2022 is striking: the weeks of 8–14 and 10–16 August were almost as high, meaning the heat was not a one-day flash but a prolonged ridge of high pressure. The 2021 week in late July and the 2023 week in early September are recent reminders that warm spells can hit outside the traditional core of summer.
To appreciate the anomaly, look at the long-term monthly means for Rochdale. July is the warmest month on average, with a daily maximum of 19.5 °C, followed closely by August at 19.1 °C. The 2022 record week was nearly nine degrees above that August baseline — a gap that shows just how extreme the event was.
| Month | Mean daily max (°C) | Mean daily average (°C) |
|---|---|---|
| January | 6.2 | 3.5 |
| February | 6.8 | 3.9 |
| March | 9.2 | 5.6 |
| April | 12.0 | 7.9 |
| May | 15.4 | 11.1 |
| June | 18.4 | 14.0 |
| July | 19.5 | 15.4 |
| August | 19.1 | 15.1 |
| September | 17.0 | 13.1 |
| October | 13.7 | 10.2 |
| November | 9.3 | 6.3 |
| December | 7.1 | 4.4 |
If you’re organising an event, a festival, or a family gathering, it’s useful to know that the hottest week ever recorded in the Manchester area occurred in mid-August 2022. The long-term data also shows that July and August are the warmest months, but the extreme end of the scale can appear in September (as in 2023) or even late July (as in 2021).
One more detail worth noting: the 2022 heatwave was not an isolated spike. The week starting 9 August had a daily maximum of 30.6 °C, and the adjacent weeks were nearly as warm — 28.31 °C and 27.84 °C. That kind of sustained heat is what you want to know about if you’re sensitive to high temperatures or relying on venues without air conditioning.
In the broader picture, the 1947–2025 series shows that extreme heat is becoming more common in the north-west, but the top spot still belongs to that August 2022 week. It’s a benchmark that locals now measure against — a reminder that Manchester’s climate, typically cool and rainy, can briefly turn much hotter than most residents expect.
These figures come from the Met Office’s National Climate Information Centre, using the long-running Rochdale station (part of the MIDAS network). The data covers the full period from July 1947 through December 2025, which gives us a robust picture of heat extremes across more than seven decades.
For weather historians and researchers, this is as clean a record as you can get for the Manchester region. The station has been consistent, and the quality control ensures that the 28.36 °C weekly average in 2022 truly represents the hottest seven-day stretch since 1947.
If you’re visiting Manchester from a warmer climate, you won’t find these temperatures intimidating — but for locals, a week at 28.36 is a genuine heatwave. It’s the kind of event that fills hospital emergency rooms and empties the bottled water shelves in supermarkets, and that’s why we track it so closely.
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© 2026 HistoClima · data: Met Office (OGL v3.0) · not affiliated with Met Office · citation permitted with source.