Know, 5 Facts About The Rainy Season In Indonesia

Illustration of rainy season in Indonesia (Pexels/Mentatdgt)

JAKARTA – The rainy season in Indonesia has arrived earlier in some areas. Even in November of this year, 2021, it rained almost every day in some areas.

As reported by BMKG (Meteorological, Climatological, and Geophysical Agency), Sunday, November 14, the forecast for the 2021/2022 rainy season in 232 Season Zones (ZOM) of 342 Seasonal Zones in Indonesia experienced the start of the rainy season in the range of October and November 2021.

In the last 30 years between 1981-2010, the start of the rainy season at 157 ZOM (45.9 percent) is expected to progress. Meanwhile, regions with an average time period of 132 ZOM (38.6 percent) and 53 ZOM (15.5 percent) experienced a delay in the rainy season.

To find out more facts, check the following explanatory points below.

1. The rainy season period in Indonesia in 2021-2022

The time of the rainy season in Indonesia, specifically, is not the same from one area to another. In the rainy season period, rainfall will increase for a certain time regularly. The peak of the 2021-2022 rainy season is expected in December 2021-February 2022.

2. Factors influencing climate and rainfall in Indonesia

The high rainfall and climate at the end of 2021 are motivated by important factors. First, if the El Nino-Southern Oscillation (ENSO) affects most of the tropics, including Indonesia, and the subtropics. ENSO is an ocean-atmospheric phenomenon that occurs periodically and irregularly so that it affects sea surface temperatures in the northeastern Pacific Ocean.

ENSO, citing the BMKG Center for Maritime Meteorology, is known as an anomaly in which sea surface temperatures in the Pacific Ocean on the west coast of Ecuador and Peru are higher than the normal average.

Illustration of the rainy season (Pexels/Miftah Rafli Hidayat)

In addition to ENSO, the Indian Ocean Dipole (IOD) is the second-factor affecting climate in Indonesia. IOD is defined as the difference in sea surface temperature between two regions, namely in the western Indian Ocean and the eastern Indian Ocean in southern Indonesia.

If a neutral ENSO develops into La Nina, which may occur at the end of 2021, the public is advised to be aware of extreme weather, heavy rain accompanied by lightning and thunder, to a tornado ahead of the transition from the dry season to the rainy season.

In addition to the two factors above, the Asian-Australian monsoon winds, geographical location, inter-tropical wind confluence, and sea surface temperatures around Indonesia also affect climate and rainfall.

3. In what month does the rainy season in Indonesia occur?

The first point has explained the peak of the rainy season in Indonesia in the period 2021-2022. Generally, the rainy season is experienced from October to April. While the dry season enters from May to September. The factors in the second point that affect climate change in Indonesia.

4. Activities in the rainy season

As soon as the rainy season enters, rainfall affects water sources around agricultural land. When entering the rainy season, farmers' activities include starting to plant, for example, rice.

Well, during the rainy season the average price of advertising also creeps up. Why? Bad weather such as rain accompanied by lightning and thunder effects fishermen's activities at sea. The fishermen find it difficult to sail when the weather is not favorable.

5. Activities to do during the rainy season

High rainfall is something to watch out for. You are required to bring protective equipment, such as umbrellas, raincoats, warm clothes, waterproof shoes, to small towels when leaving the house. In addition, it is necessary to maintain health so as not to easily catch flu, colds, coughs, and colds.

Activities that can be done during the rainy season include gardening, being creative in making crafts, baking made from fruit that is in the harvest season, making warm drink concoctions, and doing hobbies that can be done indoors.