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Climathélie
The world's climate, in your pocket — 86 years, any place
Climathélie shows the true climate of any place on Earth: 22 normals (temperature, rain, snow, sunshine, wind, sea, UV…) averaged over 86 years of Copernicus ERA5 archives. Compare two places month by month, export CSV, use it offline. €0.99 once.
Hi Product Hunt! 👋
After Aphélie (sunrise & sunset to the second), here is my third app — built, like the others, entirely from my iPhone. No computer involved.
Climathélie answers a simple question with real data: what’s the weather really like in any place, any month? It averages up to 31,412 days of Copernicus ERA5 archives (1940-2025) per location and turns them into 22 climate normals: temperatures, feels-like, humidity, rain, snow, frost, sunshine, clouds, fog, thunderstorms, wind, pressure, sea temperature, UV…
You can adjust the reference period (WMO 1991-2020 by default), follow one given month across the decades, compare two places month by month or day by day, export everything to CSV, and take your places fully offline.
It covers 7,778 built-in cities and any spot on Earth — down to an 80-people village or raw GPS coordinates.
One honest note: the first load of a new place takes about 20-30 seconds — the app crunches those ~31,000 days live, with no intermediate database. After that, the place opens instantly, even offline.
Free preview (8 cities, no sign-up): https://climathelie.neocities.or...
€0.99, one single payment. No subscription, no ads, no account, no App Store.
I’d love your feedback — missing variables, use cases, design. Everything helps! ☀️
Great and useful app. I find it to be user friendly. Makes planning for the week and holidays highly efficient!!
This is such a great idea! I love how easy it is to explore the climate throughout the year in different parts of the world. Really useful for comparing destinations and figuring out the best time to travel. Great job! 👏🌍
About Climathélie on Product Hunt
“The world's climate, in your pocket — 86 years, any place”
Climathélie was submitted on Product Hunt and earned 7 upvotes and 3 comments, placing #66 on the daily leaderboard. Climathélie shows the true climate of any place on Earth: 22 normals (temperature, rain, snow, sunshine, wind, sea, UV…) averaged over 86 years of Copernicus ERA5 archives. Compare two places month by month, export CSV, use it offline. €0.99 once.
Climathélie was featured in Weather (3.3k followers), Travel (42.5k followers) and Data & Analytics (5.8k followers) on Product Hunt. Together, these topics include over 17.7k products, making this a competitive space to launch in.
Who hunted Climathélie?
Climathélie was hunted by Samer ABOUKAIS. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Climathélie stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Samer ABOUKAIS