How close KULING has been in Marstrand, last 90 days
Mean absolute error per parameter, verified against MET Nordic 1 km-analys, METAR (flygplatsobservationer), Molnobservationer, SMHI ViVa (vattenstånd), Stationsobservationer, eumetsat_clm, smhi_cloud, smhi_vis. Nothing here is a model self-estimate — every row compares a published forecast with a measurement.
| Parameter | Mean error | Verified points |
|---|---|---|
| Wind direction | 47.73 ° | 1188 |
| Cloud cover | 0.64 steg | 1128 |
| Wind speed | 6.87 m/s | 956 |
| Humidity | 7.37 % | 748 |
| Visibility | 19742.93 m | 434 |
| Gusts | 2.25 m/s | 353 |
| Pressure | 1.04 hPa | 353 |
| sky_obs | 0.35 | 48 |
Forecast accuracy in Marstrand
- Temp, mean error
- 0.1 °C
- Temp, bias
- +0.1 °C
- Wind, mean error
- –
- Rain, mean error
- –
lower is better
forecast runs warm
Based on 2 verified observations since 2026-10-04. Last 30 days: 0.1 °C mean temperature error — worse than the 90-day average.
Local weather character in Marstrand
- Bare granite islands offer no friction, so mean wind and gusts are both higher than on the mainland.
- Sea temperature keeps the island cooler in early summer and milder deep into autumn.
- Wave height between the islands builds fast in westerly wind despite the short fetch.
What you get in the app
- Hourly forecast with apparent temperature, gusts and minute-level rain start.
- Rain radar with nowcasting and live lightning strikes.
- Marine weather: wave height, wave period, sea temperature and sea level.
- Push alerts for rain, thunder, frost, strong wind and high sea level.
- A plain-language summary that explains what today actually means.