From record-breaking rain in Tokyo to the spectacular flowering of Chile's Atacama Desert, El Niño is influencing weather patterns far beyond the tropical Pacific.

El Niño will continue to intensify ahead of its forecast peak in December.

WMO Global Seasonal Climate Update: https://bit.ly/4hFr1XD

Sea-surface temperature anomalies across central-eastern equatorial Pacific, where El Niño develops, is forecast to reach 3.7°C above normal for the Oct-Dec 2026 season.
Set to be the highest on record and stronger than the previous record in late 2015.

https://bit.ly/4hFr1XD

Isaias has become the 1st hurricane of an exceptionally quiet Atlantic season.

@noaa.gov @nws.noaa.gov says Isaias is strengthening & expected to approach northern US Gulf Coast as a “dangerous hurricane” on Friday. Storm surge & hurricane warnings in effect.

https://www.nhc.noaa.gov/#Isaias

El Niño will continue to intensify ahead of its forecast peak in December. Sea-surface temperatures in central and eastern tropical Pacific are set to increase to record levels. Above-average temperatures globally and shift in rainfall patterns are likely.
↪️ https://bit.ly/4i863AS

Asia and Africa were the most affected by water-related extreme events in 2025, according to the WMO #StateOfWater Report.
Several African countries experienced widespread flooding while South & SE Asia experienced compounded effects of cyclones & monsoons.
↪️ https://bit.ly/WMOStateofWater2025Report

The first #GlobalHeatForum kicks off in Bangkok, Thailand, to unlock finance and accelerate solutions to extreme heat, amid record-breaking temperatures and an intensifying El Niño.

Learn more: bit.ly/4zaps9Y
📹 Follow the discussions youtube.com/@heathealth_...

📢 Call for Abstracts
Share your latest research, innovations or operational advances under the theme ‘Advancing Weather Science for Resilient Societies’ and contribute to the upcoming World Weather Research Programme Conference 2027.
Deadline: 31 Dec
https://bit.ly/4wdVJen

Earth observation satellites orbit the planet day and night, all year round. They provide critical insights into Earth’s weather, water and climate — monitoring changes and helping us prepare for what’s ahead.

View the world from above this #WorldSpaceWeek 🛰️

The winners of the WMO 2027 Calendar Competition have been revealed. But more stunning photographs deserve to be celebrated.

Here are nine Honourable Mentions that stood out for bringing the theme, 𝐘𝐨𝐮𝐫 𝐖𝐞𝐚𝐭𝐡𝐞𝐫, 𝐘𝐨𝐮𝐫 𝐖𝐨𝐫𝐥𝐝, to life!

https://bit.ly/4jxEeTE

El Niño is set to affect temperature, rainfall and tropical cyclone patterns throughout the South-West Indian Ocean region.
Find out the most likely conditions for the different countries in the region throughout March 2027: https://bit.ly/4yhDyFX

Hundreds of photographers from across the globe shared how weather, water & climate have shaped their world.

13 remarkable photographs stood out for the way they brought 𝐘𝐨𝐮𝐫 𝐖𝐞𝐚𝐭𝐡𝐞𝐫, 𝐘𝐨𝐮𝐫 𝐖𝐨𝐫𝐥𝐝 to life.

Discover the WMO 2027 Calendar Photo Competition winners!
👉 https://bit.ly/4jxUVyb

From 6-9 October 2026, experts, scientists, policymakers and investors will meet at the #GlobalHeatForum in Bangkok to tackle the growing risks of extreme heat to health, livelihoods, environment and economies.

Join WMO, @heathealth.info and partners 🔗 https://www.heathealth.info/globalheatforum

WMO & @ITU call to safeguard access to radio frequency spectrum essential for weather forecasts, #EarlyWarnings, climate monitoring and water management, alongside a 🆕 Handbook on Use of Radio Spectrum for Meteorology: bit.ly/3VT0hdA

The Antarctic ozone hole in 2025 was one of the smallest in decades. 🌎

Yet UV exposure remains a concern: since the mid-1990s, it has increased by up to 20% in parts of Europe.

☀️ Effective UV protection remains essential.

Learn more: https://bit.ly/WMOOzoneUVBulletin2026pr

🌊 WMO welcomes the new United Nations General Assembly Declaration on Sea Level Rise.

WMO stands ready to work with countries and partners to strengthen observations, early warning systems and climate information and services, helping communities better prepare.

https://bit.ly/3Vgv7wy

2025 was the 4th consecutive year of widespread glacier loss across all regions.

Each bar shows the global glacier mass change in one hydrological year, from 1976 onwards. 🔵 = ice gain; 🔴 = ice loss.

📖 Read more: https://bit.ly/WMOStateofWater2025Report

#StateofWater

Today is #WorldMaritimeDay 🚢

Learn more about how the WMO community works to keep ships and coastal communities safe through accurate marine forecasts and early warnings.

🔗 https://bit.ly/WMOMarinesServices

Which season are you saying hello to? 🌍

Today at 2:04 CEST, the Sun crossed the equator, and Earth reached its September equinox. While the Northern Hemisphere said hello to autumn, the Southern Hemisphere said hello to spring.

📹 @esa.int/@eumetsat.int

It's been an unusually quiet Atlantic hurricane season - partly due to El Niño. But not in the Pacific.

🌀 Hurricane Polo intensified rapidly in the Eastern Pacific and is currently at category 4 strength, with maximum sustained winds near 240 km/h.
🔗 Hurricanes.gov

WMO SG Celeste Saulo joins @ec.europa.eu President @vonderleyen.ec.europa.eu & Canadian Prime Minister @mark-carney.bsky.social at #UNGA for the high-level pledging event of the OceanEye International Alliance for the Global Ocean Observing System.

23 Sept | 1000 EDT
🔴 LIVE: https://bit.ly/4hkMovU