Our Mission

Planning a wedding is one of life's most joyful — and stressful — undertakings. Choosing the right date and venue involves countless variables, and weather is the one factor couples cannot control. Yet it profoundly affects every aspect of the day, from guest comfort to photography to whether the ceremony can happen outdoors at all.

Wedderman exists to take the guesswork out of that equation. We give couples access to the same kind of historical weather analysis and multi-source forecasting that professional event planners and agricultural forecasters use — packaged in an elegant, intuitive interface that anyone can use in minutes.

We believe every couple deserves access to this data for free, regardless of their wedding budget.

How It Works

10-Year Historical Analysis

Our historical engine queries verified meteorological archives spanning the past decade. For any location on Earth, we analyse every day within your chosen season — spring, summer, autumn, or winter — and identify the statistically optimal wedding day for each year. Days are ranked by dryness first, warmth second, and sunshine duration third. The result is a clear picture of which dates and periods have consistently delivered the best wedding weather at your chosen venue.

Decadal Day History

Once you have a specific date in mind, our day history tool shows you exactly what happened on that date every year for the past 10 years. You'll see the high and low temperatures, total precipitation, hours of sunshine, and sky conditions for each year. This gives you a rain probability grounded in real observations — not a statistical model, but actual recorded weather. If your date was dry 9 out of 10 years, you can plan your outdoor ceremony with genuine confidence.

5-Provider Forecast Aggregator

When your wedding date falls within the 14-day forecast window, Wedderman aggregates predictions from five major meteorological providers and compares them in a single view. Each forecast is evaluated against ideal wedding conditions — no rain, comfortable warmth, ample sunshine — and assigned a suitability score from 0 to 100. We highlight the most optimistic provider and let you click through to verify each source directly. For dates beyond 14 days, we generate a climatological projection based on historical averages for that exact date.

Our Data Sources

Accuracy and transparency are fundamental to Wedderman. All weather data is sourced from Open-Meteo, an open-source weather API that aggregates data from national meteorological services worldwide, including NOAA (US), DWD (Germany), Météo-France, ECMWF, and many others. Historical archives extend back decades with daily resolution.

Location search and geocoding are powered by OpenStreetMap Nominatim, the community-driven open mapping platform. Our interactive maps use CartoDB tiles built on OpenStreetMap data.

We do not use proprietary, paywalled, or black-box data sources. Every data point shown in Wedderman can be independently verified through the underlying open services.

Privacy & Data

Wedderman is designed with privacy as a default:

• No account required — there is no signup, login, or email collection
• Session-only storage — your wedding details (date, location, season) are stored in a server-side session linked to a cookie. This data is used solely to remember your preferences between visits
• No personal data — we do not collect names, email addresses, or any personally identifiable information
• No third-party tracking — we use Azure Application Insights for basic operational monitoring (error rates, page load times). No advertising trackers or analytics pixels are used beyond this
• Automatic cleanup — session data is automatically deleted after 90 days of inactivity

Frequently Asked Questions