Weather in August 2025: Monthly weather outlook
🌍 Europe in August 2025: “monthly weather outlook / weather in August / August weather in Europe”
General tendencies (ECMWF Seasonal Guidance)
- ECMWF forecasts predict that August 2025 will remain significantly warmer than average across most of Europe. Central, Eastern and Southern Europe will see positive temperature anomalies of +2–3 °C above climatological normals .
- Persistent blocking high pressure over central/northern Europe will inhibit Atlantic frontal systems, ensuring large areas of dry, stable, sunny weather.
- Precipitation is expected below normal over much of Central, Southern and Eastern Europe—up to a 20–40% reduction from seasonal averages.
- However, areas of eastern Europe and far north may experience occasional low-pressure interruptions and localized rainfall.
- Wildfire risk remains high, especially in Mediterranean regions (Spain, Italy, Greece, France, Balkans), due to heat and dryness.
📍 Regional forecast August 2025
South (Spain, Italy, Greece, Balkans)
- Daytime: 30–36 °C, with frequent heatwave spells around 35–38 °C in southern Italy, Greece, Balkan plains.
- Nighttime: 18–22 °C, a high frequency of tropical nights.
- Rain: very scarce—mostly dry, some regions may see local thunderstorms, but overall deficits of up to 40–60 mm.
- Wildfire hazard extremely elevated due to prolonged dry, hot conditions.
Central Europe (Germany, France, Austria, Switzerland, Poland)
- Daytime: 28–32 °C; heatwaves possible, particularly mid‑August.
- At night: 14–18 °C.
- Rain: below normal, with 3–5 days of rain, total about 30–50 mm.
- Sunshine: dominantly sunny, especially under persistent high. Wildfire concern in dry areas.
East (Eastern Balkans, Hungary, Romania, Western Russia)
- Daytime: 32–35 °C, especially in the Romanian plains and western Russia.
- Nighttime: 17–20 °C.
- Rain: scarce, occasional thunderstorms may provide brief reprieves.
North‑West Europe (UK, Ireland, Benelux)
- Cooler anomalies: temperatures closer to normal, with some northern UK and Ireland being near or below average.
- Moderate rainfall — periodic Atlantic systems may bring wet days, particularly in western parts.
Northern Europe (Scandinavia, Baltic States)
- Generally warmer than average — especially Fennoscandia saw record-breaking warm summer in 2024, and trends continue into 2025.
- Rain and thunderstorms possible in eastern and coastal areas.
🌆 City spotlight: London weather in august 2025
August forecast for London 2025:
- Early August (1–7): Temperatures +25…+28 °C during the day; nights +14…+17 °C. Mostly sunny, few light showers.
- Second week (8–14): Heat builds under high pressure — +28…+30 °C highs; few nights above +18 °C. Dry spells likely.
- Mid‑month (15–20): Sustained warm period with +29 °C possible, especially in relative southerly heat advection.
- Final week (21–31): Temperatures easing to +24…+27 °C, with nights cooling to +12…+15 °C. Increasing variability and occasional rain fronts.
Rainfall in London: scattered light showers or isolated thunderstorms (~3–4 days), overall below-average total precipitation.
🌡 European heatwave and climate records context
- Summer 2024 was the warmest European summer on record, with anomalies of +1.54 °C above 1991–2020 norms; August 2024 alone was 1.57 °C warmer than its climatology (climate.copernicus.eu).
- In August 2024, parts of southeastern Europe recorded temperatures up to 41 °C (Romania, Serbia).
- Fire season 2025 saw thousands of wildfires across Europe (Turkey, Greece, France, Germany, UK) with hundreds injured, mass evacuations, driven by high heat and drought.
🍂 End of heat and transition to autumn?
- Most European areas will remain warm or hot until mid‑August, especially southern/eastern zones under blocking high.
- After mid‑August, occasional frontal incursions — especially from north-west — may initiate cooler spells and rain, particularly in north-west, UK, and central Europe.
- By late August (25–31), temperatures decline: daytime values fall to +22…+25 °C, nights drop to +10…+14 °C in many regions — marking the meteorological onset of autumn.
- September expected to bring more widespread cooling, frequent rainfall, especially in Northern and Central Europe.
✅ Recommendations weather in August
- Prioritize hydration, sun protection, and avoiding heat exposure during midday in hot regions.
- Stay alert for wildfire alerts in Mediterranean and Eastern Europe.
- For planning and staying updated:
- Use the “Pogodnik” mobile app (Android) for hourly forecasts and thunderstorm alerts.
- Subscribe to the “Pogodnik” Telegram bot for reliable alerts and updates.
📌 Summary (Europe August 2025)
| Region | Day temp | Night temp | Precipitation | Notes |
|---|---|---|---|---|
| Southern Europe | 30–36 °C | 18–22 °C | Low (dry) | Heatwaves, wildfire risk |
| Central Europe | 28–32 °C | 14–18 °C | Below norm | Stable sunny spells |
| Eastern Europe | 32–35 °C | 17–20 °C | Very low | Strong heat, rare storms |
| NW & UK | Near-normal | 12–17 °C | Normal–slightly higher | Atlantic influence moderates |
| London (example) | 25–30 °C | 14–18 °C | Low (3–4 showers) | Warm, dry summer city |
August 2025 in Europe continues the trend of anomalously warm, dry summer conditions—with heat peaking in southern and eastern sectors, and relief arriving only in late August for parts of north-western Europe. The overall pattern aligns with ECMWF seasonal forecast emphasizing heat extremes, drought risk, and persistent blocking highs.
Stay updated via Weather Forecaster app
& Weather Telegram Bot), and plan accordingly for a hot and changing month ahead.
Gleb Perov is the founder and chief meteorologist of POGODNIK, a leading weather forecasting service in Eastern Europe. With over 15 years of hands-on experience in meteorology and climate analysis, he has worked private weather services.
Gleb is the author of numerous scientific and analytical publications on climate, magnetic storms, and atmospheric processes. He regularly collaborates with major international agencies such as NOAA, ECMWF.
