Over the next twelve hours, Oslo will see a shift toward unsettled weather as the sharp pressure drop continues. The barometer has fallen nearly 5 hPa in the last 24 hours, with the steepest decline in the past six hours, signaling an approaching low-pressure system. Expect increasing cloud cover after midnight, thickening into overcast skies by 03:00. Light rain will begin around 04:00, with showers becoming more persistent by dawn. Temperatures will hold steady near 22°C through the evening, then dip slightly to 18°C by morning as cooler air filters in behind the front. Winds will pick up from the southwest, gusting to 12–15 m/s by 06:00, especially in exposed areas.
From mid-morning onward, the low-pressure center moves directly over the region, keeping conditions wet and breezy. Rainfall totals of 8–12 mm are likely between 07:00 and 16:00, with the heaviest bursts around midday when the pressure bottoms out near 996 hPa. Temperatures will struggle to rise, peaking at just 19°C in the early afternoon before falling back to 16°C by evening. Winds will remain gusty, shifting to the west-northwest at 10–14 m/s, gradually easing after sunset as the system pulls away. Skies will begin to clear after 20:00, with partial clearing by midnight.
With overcast skies and persistent rain through most of the daylight hours, solar energy collection will be minimal. Your station’s battery voltage, currently at 4.11V, should hold steady overnight but may dip slightly during the morning as rain and low light limit recharging. Expect solar voltage to remain below 0.5V until at least 10:00, with only brief, weak contributions possible in the late afternoon if breaks in the clouds develop. Battery levels should stabilize by evening as winds ease and clearer skies return, but plan for reduced solar input until tomorrow.
Last updated: 2026-05-04 19:00:18
Temperature spikes due to direct sunlight are filtered for more accurate forecasts.