What is Climate Data?
PredictWind's Climate Data feature allows you to explore historical weather conditions for locations around the world, helping you plan sailing trips and other water-based activities well before the weather forecast becomes available.
Using more than 10 years of historical ECMWF weather data, Climate Data provides an overview of typical wind and wave conditions throughout the year.
The latest update introduces a new time-of-day breakdown, allowing you to explore how conditions typically change between the morning, afternoon and evening.
This is particularly useful when planning activities where the time of day can make a significant difference to the conditions you may experience.
What's new in Climate Data?
Wind and wave conditions by time of day
Climate Data now allows you to view historical conditions for different parts of the day, rather than relying solely on daily averages.
The new time periods are:
9 am – 1 pm
1 pm – 6 pm
6 pm – 9 am
These time periods help you understand how wind and wave conditions typically vary throughout the day at your selected location.
For example, a location may experience lighter winds in the morning and stronger afternoon sea breezes. By comparing the different time periods, you can identify when conditions have historically been most favourable for your planned activity.
Updated wind and wave roses
The wind and wave roses provide a visual representation of historical conditions for your selected location and time period.
Wind roses show:
The directions the wind most commonly blows from.
How frequently winds occur from different directions.
The typical wind strengths associated with those directions.
Wave roses help you understand:
The most common wave directions.
The frequency of waves from different directions.
Typical wave conditions and sea states.
By selecting different time periods, you can compare how wind and wave patterns change throughout the day.
How can Climate Data help with planning?
Climate Data is particularly useful when you want to understand typical conditions before the weather forecast extends to your planned dates.
You can use it to:
Plan ahead: Explore historical conditions weeks or months before your trip.
Choose the best time of day: Compare morning, afternoon and evening conditions to identify historically more favourable periods.
Compare different months: Understand how seasonal wind and wave patterns change throughout the year.
Explore new locations: Get an indication of typical conditions before visiting an unfamiliar sailing area.
Plan water-based activities: Use historical trends to help plan sailing, boating and other activities where wind and wave conditions are important.
How to access Climate Data
Open the PredictWind App.
Select the location you want to explore.
Navigate to Climate Data.
Select Wind Rose or Wave Rose.
Choose the month you are interested in.
Tap the rose diagram and select your preferred time period.
Compare the different time periods to see how typical wind or wave conditions change throughout the day.
Which PredictWind subscription do I need?
Climate Data is available with PredictWind, but access to historical conditions for every month of the year requires a Basic, Standard or Professional subscription.
Important: Climate Data is not a weather forecast
Climate Data uses rolling averages based on more than 10 years of historical ECMWF data to show typical weather patterns.
It does not predict the actual conditions you will experience on a specific day.
While historical information is valuable for long-term planning, actual weather conditions can vary significantly from these averages.
As your planned activity approaches, we recommend checking the latest PredictWind forecasts and, where appropriate, using Weather Routing or Departure Planning to assess the expected conditions.