A vivid red aurora was photographed over Selfoss around 2 a.m., a rare display caused by oxygen emissions high in the atmosphere. Photos also showed green fringes, with purple and pink hues possible when nitrogen is involved.

Iceland experienced intense cold overnight, with -19.8°C recorded at Sandskeið around 6 a.m., and meteorologist Einar Sveinbjörnsson says it is likely the coldest 30 October on record. Reykjavík dropped to just over -8°C, and an Icelandic Met Office table showed -20.2°C at Setur south of Hofsjökull overnight.

A mosquito species, Culiseta annulata, has been confirmed in Iceland after specimens of both sexes were captured in Kjósarhreppur on October 16–18, 2025. The find suggests mosquitoes may now be present in the country, long considered free of them.

Vestari Hagafellsjökull, on the south side of Langjökull, has retreated about 200 meters since 2023, according to a preliminary glacier-terminus survey conducted on 20 September 2025. Since 2009 the glacier has receded roughly 973 meters through 2023, with accelerated retreat likely tied to this summer’s warmth.

A flood in the Ölfusá river has left parts of Ölfusi submerged, trapping some residents in their homes.

We've become very used to seismic activity in Iceland's southwest corner, but last night, four earthquakes above magnitude three hit a very different area - the Kolbeinsey ridge, far off the country's northern coast.

Stormy conditions in the southwestern and western parts of the country saw residents experiencing thunder and lightning yesterday. Eysteinn Örn Stefánsson captured a video of lightning that struck Mosfellsbær, which can be seen in the player above.

The thermometer at the main visitor centre in Þingvellir National Park went all the way down to –9.6°C last night and meteorologists confirm that is one of the coldest temperatures ever recorded in a built-up area at this time of year—and could even have been a new record.

A golden plover, traditionally believed to announce the arrival of spring in Iceland, was spotted in Stokkseyri on March 28, a little later than usual. They spends the winter as far south as North Africa, returning north to breed.

There has never been more use of hot water in the capital area in November than this year. The temperature that month was measured as quite cold according to the Icelandic Met Office, explaining the need for more hot water.

It has recently been confirmed that a poisonous mushroom, by the name of Steinkrympill has found its way to Iceland.