England SE & Central South Climate – August 2026 Update
City Coverage: London, Oxford, Reading, Southampton, Portsmouth, and Brighton
Summary
England SE & Central South has closed out a historic summer season with its warmest August on record, recording a mean temperature of 19.7°C. The remarkable stretch of severe heat saw peak daytime temperatures reach 38.1°C at Kew Gardens in London, while the broader region endured prolonged dry spells and unprecedented sunshine. Across the three summer months, relentless high-pressure systems produced the sunniest and warmest summer the region has ever observed, with seasonal forecasts pointing toward lingering above-average warmth into autumn.
This month in numbers
The region recorded an average temperature of 19.7°C, making it the 1st warmest August in 127 years of records and setting a new monthly high 3.6°C above the long-term baseline. Average maximum temperatures rose to 26.0°C, a sweltering 5.1°C above normal. Solar radiation was equally intense, delivering 284 hours of bright sunshine, the 2nd highest total for the month on record, which provided nearly three extra hours of direct sunlight each day compared to typical conditions. Complete freedom from sub-zero temperatures marked the 1st lowest frost total on record with 0 frost days, while total rainfall sat well below normal at 35.2 mm.
What changed
Looking at the full summer season from June to August 2026, the region experienced its 1st warmest summer on record with a mean temperature of 19.5°C, beating normal levels by 3.9°C. Sunshine totals reached 883 hours across the three-month period, establishing the 1st highest summer sunshine total in records going back to 1910. While the United Kingdom as a whole experienced its warmest summer on record at 16.5°C, southern England was the core epicenter of the heat. Globally, England SE & Central South ranked 9th out of 232 tracked countries and territories for three-month temperature anomalies, part of a striking European pattern where 9 of the top 10 warmest regions on Earth were concentrated across Europe.
What’s driving change?
The persistent heat and dry conditions across southern England were propelled by severe , which allowed patterns to lock in place for prolonged periods. These stagnant upper-level atmospheric waves created recurring , trapping intense heat over the region while deflecting rain-bearing Atlantic depressions far to the north. A positive North Atlantic Oscillation phase early in the season further encouraged mild, dry conditions to settle over southern territory. While localized heatwaves and drying soils challenged southern farmers, the global scale of extreme weather includes 29 wildfires in Australia tracked on our live map at Extreme Weather tracker.
Looking ahead
Long-range seasonal outlooks indicate that settled conditions and above-average temperatures are likely to persist across southern England into autumn, with an elevated risk of late-season heat spells before cooler conditions gradually take hold over the coming months.
Generated by Gemini from climate data and web sources
At a Glance
Temperature – Average
Long-Term Trends
Climate Insights – England SE & Central South
Precipitation, Sunshine, Frost and Snow are converted to standard deviations from their own average so they can share an axis with Temperature anomalies.
Climate History
33 of 33 events
Data: Met Office UK Regional Series © Crown copyright.
Heatwave Days – England SE & Central South
Warm Spell Duration Index (WSDI) - days in a 6+ day run above the local 90th-percentile temperature for that time of year.
Data: World Bank Climate Change Knowledge Portal (ERA5-derived). Refreshed roughly 1-2x/year, ~7-8 months behind present.
Climate Map – UKUnited Kingdom
Source: Met Office UK Regional & National series (Tmean, Precipitation, Sunshine, Air Frost) © Crown copyright, plus GPCC (Snow, water-equivalent). Anomalies are vs the 1961–1990 baseline. See methodology.
Typical Climate – England SE & Central South
Köppen Cfb · TemperateEngland SE & Central South has a temperate climate (Köppen Cfb: Oceanic / temperate), with distinct warm summers and cool-to-cold winters. July is typically the warmest month, averaging 18.0°C, while January is the coldest at 4.8°C. Annual precipitation averages around 827mm, spread fairly evenly across the year.
Monthly climate normals (2016–2025) - bar colour and height show average temperature, the shaded area shows average monthly rain, with snow (water-equivalent) shown separately.
Data: Met Office UK Regional Series © Crown copyright.
Year-on-Year Trends
The 4byo Climate Helix – England SE & Central South
Data: Met Office UK Regional Series © Crown copyright.
Monthly Temperature – England SE & Central South
Background lines show the last 40 years (plus the record year and its opposite, wherever they fall).
Data: Met Office UK Regional Series © Crown copyright.
Records – England SE & Central South
Met Office UK Regional Series © Crown copyright - Anomalies vs 1901-2000 mean
Shifting Seasons
Warm / cold seasonsKöppen Cfb · TemperateHow spring and autumn have shifted in England SE & Central South. Spring is defined as the date monthly temperatures first rise above the long-term annual mean (9.4°C, from 1900–1929); autumn is the date they fall back below it. Temperature swings 12.1°C peak-to-peak across the year - a classic four-seasons rhythm.
Baseline vs recent monthly temperature climatology. Biggest warming: Jun (+2.2°C).
Data: Met Office UK Regional Series © Crown copyright.
Emissions & Energy
Explore
Explore Climate Data
Data Sources
Data Sources for England SE & Central South
Every figure on this page is sourced from official, openly published climate datasets. Anomalies are calculated against the 1961–1990 baseline (temperature) and 1991–2020 (rainfall, sunshine, frost) - see the Methodology & Sources page for the complete dataset list and update calendar.
UK Tmean / Tmax / Tmin, rainfall, rain-days, sunshine and air-frost series. © Crown copyright.
Warm Spell Duration Index: days in a 6+ day run above the local 90th-percentile temperature, ERA5-derived. World Bank Climate Change Knowledge Portal.
Monthly snow water-equivalent, Global Precipitation Climatology Centre (DWD).
FAQs
FAQs
How is the climate in England SE & Central South changing?
England SE & Central South is warming in line with the rest of the world. The page above shows the latest monthly temperature anomaly versus the 1961-1990 baseline, the long-term annual trend, and the region's rank in the historical record. The headline panel also shows the long-term trend rate per decade and the warmest and coolest years on file.
What is the climate like in England SE & Central South?
England SE & Central South has a temperate climate (Köppen Cfb: Oceanic / temperate), with distinct warm summers and cool-to-cold winters. July is typically the warmest month, averaging 18.0°C, while January is the coldest at 4.8°C. Annual precipitation averages around 827mm, spread fairly evenly across the year.
Where does the climate data for England SE & Central South come from?
Climate data for England SE & Central South comes from the UK Met Office HadUK-Grid (temperature, rainfall, sunshine, air frost), refreshed every month, when the upstream temperature and rainfall data are refreshed.
What is the climate baseline used on this page?
Anomalies on this page are calculated against the 1961-1990 climatological baseline, which is the standard reference period used by the Met Office, NOAA, IPCC and most national climate services. Some panels also show the source-native 1901-2000 (NOAA) or 1991-2020 (WMO) baselines for verification. See Methodology & Sources for the full reference.
Which areas does the England SE & Central South climate data cover?
The England SE & Central South climate profile covers London, Oxford, Reading, Southampton and surrounding areas. London, the South East and Central Southern England climate data
How often is the England SE & Central South climate update refreshed?
The England SE & Central South climate update is refreshed monthly, typically a few days after the previous month closes and the upstream provider (Met Office HadUK-Grid, NOAA Climate at a Glance, Copernicus ERA5 or the Global Carbon Project) publishes its update. See the Climate Rankings for cross-region comparisons.
What counts as a Heatwave Day on the England SE & Central South climate page?
Heatwave Days use the Warm Spell Duration Index (WSDI) - the WMO/ETCCDI-standard heatwave measure: days that are part of a run of 6 or more consecutive days above the local 90th-percentile temperature for that calendar day. The 90th-percentile threshold varies by time of year (a hot day in January is judged differently to one in July) but is fixed to the 1961-1990 baseline for every year shown - it does not shift as the climate warms, which is why Heatwave Days trend upward over time.
Does the England SE & Central South climate page include frost and snow data?
Yes. Frost Days (days with a minimum temperature below 0°C, World Bank CCKP) and snow water-equivalent (GPCC) are shown alongside temperature and precipitation, each measured against the 1961-1990 baseline where a like-for-like historical comparison is available.
What major climate events has England SE & Central South experienced?
Major climate events in England SE & Central South include The Thames frost fairs end (Little Ice Age) (1400-1814); UK Clean Air Act (1956); The 1976 UK drought; The Big Freeze of January 1987; Positive NAO phase dominates the 1990s; Summer 2007 UK floods; UK's post-2013 warmth acceleration; The Beast from the East (2018). The Climate History panel on this page lists 33 sourced events and pattern shifts relevant to England SE & Central South, the earliest from 1400 - 24 about England SE & Central South itself and the rest global context such as volcanic eruptions and El Niño events. Each entry carries its own sources and can be searched, filtered to local events or by category, and sorted by date; scrolling the list moves a cursor across the chart above so you can see where each event falls in the record.
Where does the Climate History list for England SE & Central South come from, and how is it checked?
It is a hand-reviewed register, not an automatic feed. Every entry is sourced, and each one records how it was verified - against this site's own data series, against a peer-reviewed paper, or against the public record of the event. 19 of the 33 entries here are written specifically about England SE & Central South, usually quoting its own ranking or measured figures. The rest give global or national context shared with wider pages. Where a figure is narrower than it first appears, or a famous claim does not hold locally, the entry says so.
Are nights warming faster than days in England SE & Central South?
The Long-Term Trends chart has a Day/Night toggle showing Day Highs and Night Lows anchored around the average trend, so they always bracket it rather than both drifting to one side. Across most of the world, nights warmed faster than days from the 1960s to the late 1980s (air pollution dimming daytime sun), and days have generally been catching back up since, as skies cleared. Toggle Day/Night on the chart above to see which pattern England SE & Central South follows.