About Us
For a Society in Harmony with Nature Weather Solution Company
Since its establishment in 1950, Japan Weather Association has been a pioneer in weather consulting services in Japan. By leveraging AI, IoT, and meteorological big data, we have advanced the accuracy of weather investigation, analysis, and forecasting, while supporting initiatives that help build a sustainable world, such as adaptation to climate change.
With weather technology, Japan Weather Association is committed to supporting the future and creating a “society in harmony with nature.”
Discover the Japan Weather Association through numbers
Information Provided
500+types
Information Provided
500+types
The weather information required by each customer varies widely.
At the Japan Weather Association, our consultants identify each client’s needs and combine approximately 500 types of weather data and indices, derived from our proprietary numerical weather prediction models, to provide the most suitable information. We also offer professional guidance on how to effectively utilize the data.
Service Portfolio
10Focus Areas
Service Portfolio
10Focus Areas
To support our customers in solving their challenges, we deliver diverse services and solutions across the following ten focus areas.
－Electric Power Demand Forecast －Solar Power Generation －Wind Power Generation －Environmental Assessments －Disaster Mitigation・Crisis Management・Climate Change Measurements －Transport (Roads, Rails, Air, Oceans) －Meteorological and Oceanographic Forecasts & Real-Time Data Provisioning －Manufacturing, Retail, Advertising, and Marketing －tenki.jp & Media Services －Web,Apps & Others
Japan’s first proprietary numerical weather prediction model by a private weather company
2types
Japan’s first proprietary numerical weather prediction model by a private weather company
2types
The Japan Weather Association developed Japan’s first proprietary numerical weather prediction model by a private weather company, ANEMOS, in 1988. Its successor, SYNFOS, has been providing forecast information to customers since 2005.
Building on more than 30 years of operational experience, SYNFOS is currently available in two main variations: SYNFOS-5, designed for short-term forecasting, and SYNFOS-2-Week, which supports forecasts up to two weeks ahead. By selecting the most suitable forecast range and spatial resolution, we provide optimized consulting services tailored to each customer’s specific needs.
Established
75Years
Established
75Years
Founded in May 1950, the Japan Weather Association marks its 75th anniversary in 2025. On this milestone, we declare the following three commitments:
1. Advancing meteorological expertise
We leverage the knowledge and experience cultivated by our professionals, together with diverse external networks.
2. Supporting society through weather resilience
We contribute to societal development by providing timely and accurate consulting in response to increasingly severe weather disasters.
3. Addressing climate change
We actively support climate change mitigation and adaptation through initiatives such as the promotion of renewable energy, energy efficiency, reduced food loss, and improved societal efficiency.
Meteorological Service Act Permit No.
5
Meteorological Service Act Permit No.
5
The Japan Weather Association was established in May 1950. It was founded as the Japan Weather Association Foundation after receiving official approval from the Minister of Transport at the time.
In May 1955, the Association obtained authorization under the Meteorological Service Act to conduct forecasting and explanatory forecast services. The permit number granted was No. 5, which is the second-oldest permit number among forecasting service operators that remain active today.
(Reference: Japan Meteorological Agency website, “List of Authorized Forecast Service Operators (Weather and Wave Forecasts)”https://www.jma.go.jp/jma/kishou/minkan/minkan.html)
Awards
87
Awards
87
From 2010 to the present, the Japan Weather Association has received 87 awards, including commendations for professional achievements and recognitions from academic societies.
Data Volume Handled
10TB / month
Data Volume Handled
10TB / month
The Japan Weather Association processes approximately 10 TB of data each month from sources in Japan and around the world. This data is refined to meet customer needs and delivered on a daily basis, supported by 24/7 system monitoring to ensure consistently high quality.
Beyond weather data, we integrate diverse big data to provide advanced insights such as energy and product demand forecasting and pollen dispersion forecasts. By combining data with expert consulting, we transform raw data into actionable information tailored to each customer.
Diversity
Unlimited
Diversity
Unlimited
“The Japan Weather Association is committed to creating an inclusive workplace where diverse talent can fully realize their potential, while actively promoting diversity and inclusion.
In particular, we have received external recognition as a company that supports women in the workplace. We have been awarded the highest level (Third Tier, Three Stars) of the “Eruboshi” certification, which recognizes companies that promote women’s participation and advancement, as well as the “Kurumin” certification as a child-rearing support company that helps employees balance work and family life.”
Certified Professionals
590+ (cumulative)
Certified Professionals
590+ (cumulative)
Employees of the Japan Weather Association hold a wide range of professional consulting qualifications.
As of July 1, 2025 (figures include duplicates)
－Certified Weather Forecasters: 376
－Professional Engineers: 112
－RCCM (Registered Civil Engineering Consultants): 31
－PhD Holders: 27
－Certified Environmental Measurement Experts: 18
－Licensed Surveyors: 20
