logo

Asia update Summer 2025.

Have completed the latest round of site advancement and apologise for the delays. We can say the advancement on this round appears to be well worth the extra efforts. Can be accessed on desktop with the new Charts provider, the Asia Weather systems page and Asia Weather Outlook completed every Tue-Wed weekly.

We are testing a new set of weather charts only accessed on Desktop provided through imweather.

  • Responsive screen resizing allowing custom layouts per screen size no more having layouts looking like the morning after a hard night out.
  • A new modern API and Layout that is responsive also to Layout Screens while providing the latest weather information while you may relax as the information loads.
  • A new sleek looking Weather Forecasts page providing localised weather information up to 5 days in advance.
  • A updates ribbon on the main page that flashes important weather information.
  • The new weather forecasts page has a toggle for Temp change and Theme Changes also with image processing features.
  • A new more responsive way to provide site updates across device ranges no more stale files.
  • Asia summer storm announcements now appear on the Accordion tabbed region under June 2025 convective outlook.

Here are the features given per the new responsive screen specifications currently in testing.

  • Mobile users who choose to access the site through the URL on there browser get a minified version of the site with a simplified weather program built for mobile.
  • Tablet and some Chromebook users who access the site through the site URL cassavaweather.com receive access to there own simplified HTML version of our new exciting weather program with a version down from the Desktop that does not include charts, the business sections, or the information pages or weather popups.
  • Laptop users with larger screens who choose to visit the site URL in there browsers will get the full version of the site.
  • Desktop users who visit our site URL get the best experience as they may have better hardware and extra memory to run the extensive programming of the full site while using all the weather features we include.
  • Please note for 2GB RAM chromebooks some of the site features load slow such as the satellite tab. Also note that the speed tests are carried out on stable fibre home network for desktop/chrome/mobile. Mobile site on Mobile 4G reports good loading speeds.

Asia:

Asia weather update Late May 2025: As Asia readies for the weather oscillation from Spring to Summer 2025 months find that convection/monsoon/tropical low effects will move into the south east Asia areas due to seasonal changes with a Neutral ENSO phase expected into summer. The forecasters have indicated for May to June of 2025 that the effects of the La-Nina will wane and a move to the neutral phase of the ENSO has begun as is where the situation is in Late May 2025. It is possible therefore that weather in the South East Asian area/East Asia will be more inclined to be affected by naturally occurring regional weather patterns outside the ENSO phase shifts ie The Monsoon Months in Malaysia in Late Spring bringing humidity, afternoon and evening thunderstorms sometimes squally with brief heavy downpours, whilst in South and East asia the Plum rains systems arrive.

When the Meiyu Front appears around early June to Mid July thunderstorms are active in the afternoons and evenings due to daytime heating creating instability sometimes in areas the Front affects.

At times in the Asia 2025 spring summer months the MJO will play an important part in Weather affecting the Indian Equatorial Seas/MC along with the change to a Neutral ENSO soon (within 1 month from March 2025) to bring weather to South East Asia in the form of average rains and convection to localised areas when Neutral conditions begin. Storms and Typhoons may form when and if they do happen at an average output interacting with the active MJO pulse should one arrive in the Maritime Continent.

In the form of perceived Typhoon rates in the South East Asia area the shift to a Neutral ENSO soon after April 2025 may indicate that the South East Asia area will undergo normal localised climate patterns that may in turn mean that Typhoon/Storm output in the Area is neither Higher or Lower in Summer 2025 due to the shift to a Neutral ENSO in this interim. Being a approach to a summer pattern throughout Asia may then mean that at times the region may experience organised or disorganised thunderstorm systems near the MC some staying for hours at a time whilst some may begin and end quickly this will be determined by Higher CAPE in areas and tropical disturbances in the lower atmosphere and finally linked to Monsoon wind arrival in May 2025.

As summer fast approaches at the end of May 2025 we are seeing the North spread from the equator of the Summer Temperature inversion such that the Indo-Malay-PNG-South Phillipinnes regions are warming. The usual pattern of the ITCZ system spreads more northwards in the Asian summer and wind patterns shift the warming moist air to other areas.

Elsewhere there may be Hot and Dry spells due to the weather change to summer with possibilities that those regions near Hot Dry deserts may have dust control, whilst in other regions high humidity levels. Also Hot weather for prolonged exposure is not healthy so hydration and shade become important. If there may be reduced CAPE and a tropical disturbance then there may be prolonged light rain or rain. Lastly should and when they arrive Typhoons and Storms may affect South East of the Phillipinnes waters, Within the South China Seas, sometimes on the Eastern Board of Asia and Lastly in the Bay of Bengal as summer approaches.

MJO: On the 6th of June 2025 the MJO is highly active in the western equatorial pacific (7). Then around the 11th of June 2025 a reset to the Western Region near Africa (8) is possible and the MJO very active here.

STJ/Westerly Jet: The icy grip of snow begins retreating after a cold winter as the Asian regions warms within May spring 2025. The Asian region is aligning with summer patterns. Himalayas displays colder environment in early May 2025.

ENSO: In South East Asia - Asia for late April-May 2025 a move to Neutral ENSO is confirmed for the region as the Asia area is within Spring 2025.

EAT: Going into June 2025 the EAT will be at peak and the presence of the Large Semi Stationary East Asia Trough becomes more prominent. The the Plum Rains (Meiyu Front) system has begun in inactivity and activity phase. The 500hpa Trough the origins of the EAT is on the move in East Asia affecting South and East China and North East Asia from June 2025 intermittently. Will bring forecasted rains and thunderstorms to areas affected at times to the south and east china area as the trough fluctuates in and out of phases moving to the south and east - north east regions of asia. In the North East sector of Asia will bring rains at intermittent times from the secondary trough in June 2025 and possible thunderstorms-downpours to the South China at intermittent times.

The Daily EAT reports will begin sometime in early June 2025 as we have been busy creating the exciting new weather console (Testing mode) that is powered by a more powerful and convective accurate weather service.

Convection T Storms: Temporarily offline until around 4th June 2025. Been busy building the new weather console (That is currently in testing).