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The year 2025 was the warmest year in Iceland since measurements began. The national average temperature was 5.2 °C, which is 1.1 °C above the average for the years 1991–2020 and the highest ever recorded. Temperatures were well above average for almost every month of the year. The spring weather was exceptionally favourable; it was the warmest spring ever recorded nationwide, and May was by far the warmest May on record. In mid-May, a 10-day heatwave occurred across the entire country. It was the most significant heatwave known in Iceland for the month of May. Overall, the weather in 2025 was unusually calm, with few stormy days and generally favourable conditions. It was relatively wet at the beginning of the year but dry toward the end. Snow cover was light across the entire country.

The implementation of SeisComP represents a major step forward in the development of the IMO's earthquake monitoring capabilities. Preparations have been underway for several years, and the system transition involves both technical and procedural changes aimed at improving analytical capability, data dissemination, and providing a more modern working environment for specialists.

The magma inflow rate beneath Svartsengi remains slow but steady, similar to recent weeks. According to model calculations, just under 21 million cubic meters of magma have now accumulated beneath Svartsengi since the last eruption in July 2025.

Updated 5 August

The volcanic eruption that began on 16 July on the Sundhnúkur crater row is now officially over, and a new hazard map has been issued. Despite the end of the eruption, life-threatening conditions remain in the area due to unstable lava and the potential for gas pollution. Uplift has resumed, and magma continues to accumulate beneath Svartsengi.

By 11:00, more than 450 lightning strikes had been recorded since the activity began.