Clear Sky Map & Climate
Historical share of clear nights by month for any location — plan the best season to visit, not just the best night.
Share of nights with mostly clear skies (average night-time cloud cover ≤30%) for each calendar month, based on the last 5 years of Open-Meteo historical archive data — a climate estimate, not a forecast for any specific night.
How this is calculated
For each calendar month, this averages night-time cloud cover across the last 5 years at this location (same night-bucketing method the live weather forecast uses) and reports the share of nights at or under 30% average cloud cover. It's a screening tool for seasonal patterns, not a promise about any particular night — always check a short-range forecast before you travel.