Visiting Kuching, Sarawak would be the best experience if you know when to visit. The busiest time for Sarawak, along with its neighbor, Sabah would be during Harvesting celebration festivals (end of May - June). However, there are lots other factor that you should consider when it comes to visiting Kuching. Fruit season would be the time that you might not want to miss as well. That would be around November - January. Sometimes, you may find your luck in July - September, depending on the dry season of the year.
Choose wisely for the greatest experience
Backyard Tour in their latest blog talked about the best time to visit Kuching. It was based on weather factor though.
The weather in Kuching shows that the highest rainfall is in January and the lowest is in June to August. Temperatures remain fairly constant throughout the year and average between 23°C and 32°C depending on both location and time of year. However, the global warming has taken great effect on the weather in Kuching. It is normal even for all tropical island climates are unpredictable. Rainfall can occur at any time of year, with weather conditions often changing very quickly with showers turning to sunshine or vice versa in a matter of minutes. Best is to be prepared for rain rather than trying to avoid it.
A peak in rainfall occurs between November and March, although even in these months rainfall can be sporadic, and it is difficult (in fact impossible) to pre-determine which will be the wet weeks and which will be the dry. However, you can always do last minute checking on www.met.gov.my or www.theweathernetwork.com (scroll further down for 7 days or 14 days forecast). This would help you to do planning at least on the outdoor activities in Kuching.
There are many benefits of lower visitor-numbers to be enjoyed in the traditionally wetter months, and the National Parks, wildlife sanctuaries, jungle lodges, caves and dive sites may be far more appealing with fewer fellow visitors to share your experiences with. But beware, if you are planning to visit Semenggoh Orang Utan Rehabilitation Centre, you may want to choose non-fruit season. Orang-utans would not be there to get fruits from the ranger since they can find them in the forest themselves.
As the blog concludes, nothing compares the answers directly from the locals when it comes to weather. This applies to every destination that we are planning to go. It would be easier to ask a local expert rather that making your own assumption.