A tropical night was recorded in Reipå, Meløy, Nordland on 12 September, with temperatures staying above 20°C and a minimum of 20.4°C—the latest such event ever measured in Northern Norway. September temperatures across the region are 4–5°C above normal, aided by warm southerly air, wind, and föhn effects.

Environment Canada has issued a special air quality statement for much of British Columbia as wildfire smoke from B.C., Yukon and the Northwest Territories spreads over the next 24–48 hours. Officials warn of health impacts, especially for vulnerable groups, and advise reducing outdoor exertion and keeping indoor spaces cool and sealed.

British Columbia set a new national September heat record with 40.8 C in Cache Creek, as wildfire smoke triggers widespread air-quality alerts. Multiple heat warnings remain in effect across the province.

Ashcroft, British Columbia hit 40.8 C (105 F) on Sept. 3, setting the hottest September temperature ever recorded in Canada. A regional weather observer called the late-season heat highly unusual and linked it to a blocking high-pressure system.

A temperature of 29.8 °C was recorded at Egilsstaðir Airport on August 16, 2025, marking the highest August temperature measured in Iceland this century.

Stockholm Vatten och Avfall warns that unusually high water temperatures in Lake Mälaren have strained water production, urging residents and businesses across multiple municipalities to conserve tap water immediately.

Tana and the rest of Finnmark are experiencing an unusual late-summer heat wave with temperatures around 30 °C, leading locals to swim in the warmed Tanaelva.

The Lenangsstraumen weather station in Lyngen, Nord-Troms recorded a tropical night with a minimum temperature of 20.1 °C overnight, part of an ongoing heat spell across Northern Norway.

A cold early summer followed by extreme July heat has decimated cloudberry crops in northern Sweden, creating a shortage and driving expected retail prices up to SEK 300 per kilo.

Five locations in Finnmark recorded temperatures above 30 °C on Saturday, an unusually high heat for the region.

Sea surface temperatures around the UK have been the warmest start to the year on record, driving unusual species like bluefin tuna, octopus and mauve stinger jellyfish into British and Irish waters. Irish waters have cooled since a May marine heatwave but remain above average in the east and south.

Finland recorded its 19th straight day of 30 °C temperatures, breaking the previous record of 13 days set in 1972, as the ongoing heatwave continues across the country.

Five communities in British Columbia’s Interior, including Prince George, recorded their hottest July 30 on record, with Prince George narrowly surpassing a 105-year-old temperature record.

Recent heat waves have warmed Lapland’s rivers and lakes, leading Metsähallitus to suspend fishing permits and advise against salmonid fishing in the warm waters.

SOS Alarm in Norrbotten, Sweden is experiencing extreme call volumes from approximately 20 fires triggered by lightning in a heatwave, resulting in delayed emergency response times.

A persistent heatwave in Finland is fueling dense blue-green algae blooms in the Baltic Sea’s Gulf of Finland and Archipelago Sea, with freshwater sightings remaining stable.

Grong and Namsskogan in Trøndelag have logged 13 straight days above 30 °C, breaking the 43-year Nesbyen record, amid a nationwide heatwave.

During a prolonged heatwave with temperatures above 30°C (86 F) in Vindelfjällen, hikers on Kungsleden are shifting their treks to early morning and nighttime to escape daytime heat.

Over the weekend, train traffic on the Iron Ore Line was halted for nearly 24 hours due to sun-induced track kinks (“solkurvor”), a phenomenon that Trafikverket warns could recur on hot days.

Norrbotten has experienced a persistent heat wave with temperatures above 30 °C for two weeks, and SMHI forecasts 32 °C in Luleå on Wednesday. Meteorologist Linus Karlsson attributes the prolonged heat to stable high pressure, with warmth expected to continue through the week.