Weather4D is the first application to use the power of GPU for iPad and iPhone to animate the weather like a video. 2D or 3D display is complemented by the continuous scrolling of time which allows to perfectly visualize the evolution of weather phenomena to come. The automatic scrolling can be accelerated or slowed manually by forward or backward in time by simply sliding a finger or by time increments through taps on icons "next / previous".

Global data are based on the 8 day forecast from the U.S. model GFS distributed as GRIB files, and can be complemented by fine mesh forecasts to 96 hours in 1 hour to several areas including western Europe (subscription to WRF). These forecasts are updated four times a day.

Universal Application:

Fully functional on all devices (iPad, iPhone, iPod Touch). No additional costs!

Weather data types:

- Cloud cover
- Precipitations (Rain, Snow)
- Wind 10 m above mean sea level
- Temperature 2 m above mean sea level
- Pressure MSL
- Waves (Height, period & direction)
- Ocean currents

Data model:

- Data from NOAA GFS, CMC GEM, WRF, FNMOC WW3, MyOcean & Tidetech
- Forecasts up to 8 day
- Data steps : 3h, 12h, 24h
- Worldwide Cover
- Resolution : 0.5°, 1°, 2°
- Data updated 4 times a day (every 6 hours)

The data are in the form of stacked layers that can be assembled at will. The fine tunings allow to adjust the readability according to the taste of user: modes display, level of transparency, types of symbols, etc.. A "full screen mode" allows you to use the entire screen area.

Weather4D is a very user friendly application and easy to use. However, it relies on highly accurate forecasts developed for professional use worldwide. It is designed for demanding users.

What's New

Version 1.3.9

- Bug fixes

Customer Reviews

Most useful weather app that I


This is without a doubt a great weather app. In fact, I’ll go as far as saying that it’s the best that I’ve seen.

I’ve downloaded many different weather apps and this one has become my favorite. It combines a lot useful information, which is typically viewed separately from multiple sources; I especially like how I can view a lot of important data over-laid at the same time, in a very efficient manner. The user interface is also very intuitive making the app easy to use. Prior to owning this application I found myself switching back and forth between different types weather maps. The only feature that I hope will someday be added is a way to overlay the numerical value of ocean wave heights, currently ocean wave period predictions can be viewed but wave heights can only be viewed via color gradients.

I believe that anyone who needs to, or simply enjoys, forecasting the weather will love this app.

A beautifully-designed app for NOAA GFS data


Weather4D is a beautiful app for examining output from the NOAA Global Forecast System (GFS), which is the basis for most U.S.-based weather forecasts. The user interface is elegant on both the iPhone and the iPad and has many thoughtful features, such as the land and sea masks and the way, when looking at further out forecasts, that the clock icon is shaded in proportionally to the time since the model was run.

I haven't encountered any bugs, and I appreciate that app comes with a comprehensive user guide.

One thing that I would like to see added is the option to display scale bars for the shading (e.g., the temperature scale corresponding to the temperature shading). Overall, however, Weather4D is a wonderful app.

Truly Amazing


This is a wonderful app!
As a pilot and flight instructor I use this app for long term prediction. The graphical interface has almost limitless settings for including or removing visible data. I have been disappointed by every weather app I've downloaded, until this. Lives on my home page. (Did the negative reviewers even understand the most basic aspects of weather prediction?) If you want simple idiot mode weather, most other apps will be fine. If you want beautifully depicted graphical prediction models, this is it.


Olivier Bouyssou
99.7 MB
Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, French
Age Rating
Rated 4+
© 2011,2012,2013,2014,2015 Olivier Bouyssou All rights reserved.
  1. 1 Year HD Forecast Subscription $33.99
  2. 3 Months HD Forecast Subscription $16.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like