Climate and Seasons in Bali
Bali weather basically follows two seasons, wet (between October and April) and dry (between May and September), with an average year-round temperature of 31°C. The wet season brings rain and overcast days, with the most precipitation occurring between December and February. From June to August is the windy and traditional kite season in Bali. The central highlands are typically cooler than the coasts.
Although Bali is a relatively small island, its overland terrain features varying climates. The mountains in the central region have occasional fogs and mists descending over the valleys and farmlands throughout the day. Several surfing locations along the southern coasts offer fun waves in both seasons. Below are forecasts and info on Bali weather to help you plan ahead for your island holiday.
Best Time to Go to Bali
The best time to visit this tropical island is from May to August, when humidity levels are low with cool breezes day and night, making for comfortable stays and long overland trips. Being located approximately eight degrees below the equator, Bali offers approximately 12 hours of sunlight all year round. However, weather preference varies among different travellers. And as with almost any other place in the world, it is difficult to predict the weather.
Hottest Time in Bali
As a tropical island, Bali receives its ample 12-hour share of sunlight. The highest temperature in Bali in 2011 was a recorded 34.8ºC during the month of October, when the sun was seven degrees south - literally right over the islands of Java, Bali, and the Nusa Tenggara islands. The average daytime temperature ranges between 27ºC to 32ºC. Bali's humidity levels are relatively high at about 75%. The cooler highland regions average between 21ºC to 27ºC, dropping sharply low during the nights.
Low Season in Bali
In terms of the weather, Bali's so-called 'high season' normally coincides with the dry. Thus the wet or rainy season would easily be regarded as the 'low'. The so-called 'peak season' in Bali is usually during the Christmas and New Year holiday period, from December 24 to January 5. The dry or 'high' season would fall between July 1 and September 30.
Any other period easily falls into the 'low season' in Bali, when you would expect lower rates offered at hotels, and less crowds at major places of interest. However, you could expect much quieter roads and faster access times from your hotel to locations during the Ramadan holidays observed in Indonesia, culminating with two major dates of Eid-ul-Fitr, 'Idul Fitri' or simply 'Lebaran' on the Islamic lunar calendar. The date in the Gregorian calendar falls approximately 11 days earlier each successive year. Idul Fitri fell on 18 and 19 August in 2012.
These periods usually have much of the populace consisting of those from neighboring islands going home for 'mudik' or holiday home bounds, thus resulting in quieter traffic in Bali than on ordinary days. A similar nuance can be observed during the Nyepi, 'silent day' or Saka New Year celebrations. Nevertheless, many 'low season' activities can be had, such as water sports, overland highlights, and all-year round surf.