Sarawak Climate

Last updated: January 18, 2025

The climate of Sarawak, Malaysia, is classified under the Köppen-Geiger system as Af, indicating a tropical rainforest climate characterized by high humidity and substantial rainfall throughout the year. Temperature ranges in Sarawak are relatively moderate for a tropical region, with minimum temperatures dipping to around 16°C (62°F) in February. The average temperature hovers around a warm 27°C (80°F), while extremes can reach up to 37°C (98°F) in September, illustrating the significant thermal variability that can occur even within this predominantly humid environment. This climatic profile supports the rich biodiversity and lush landscapes that Sarawak is renowned for.

Sarawak temperature by month

Sarawak, Malaysia, exhibits relatively consistent temperature patterns throughout the year, characteristic of its tropical climate. The minimum temperatures typically range from 16°C (62°F) in February to 20°C (67°F) in December, indicating mild nocturnal coolness. Average monthly temperatures consistently hover around 27°C (81°F), providing a stable warm environment. Maximum temperatures peak in September, reaching up to 37°C (98°F), while the rest of the year generally sees highs between 34°C (93°F) and 36°C (97°F). Notably, the month of February marks a brief cooler phase, while the summer months exhibit slightly elevated temperatures, reinforcing the region's overall warmth and humidity.

Monthly Temperatures in Sarawak, Malaysia

The chart illustrates Sarawak's temperature patterns throughout the year, with values aggregated from various locations across the region. It highlights seasonal variations and temperature changes across the months.
JanFebMarAprMayJunJulAugSepOctNovDec797980818181818180808079
Data source: Sarawak temperature data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

Kuching experiences a minimum temperature of 21°C (69°F) in September and reaches a maximum of 35°C (96°F) in August, showcasing a warm climate throughout the year. For more detailed insights into the monthly temperatures in Kuching, visit monthly temperatures in Kuching.

Precipitation Patterns in Sarawak

Precipitation in Sarawak, Malaysia, is abundant and exhibits distinct seasonal fluctuations throughout the year. The region experiences its highest rainfall in December, with 349 mm (13.7 in) over an average of 29 days. November and October follow closely, receiving 317 mm (12.5 in) and 294 mm (11.6 in), respectively, indicating a pronounced wet season that peaks at the end of the year. The early months of the year, from January to March, also see significant precipitation, with January recording 253 mm (9.9 in) and March slightly lower at 246 mm (9.7 in), although the number of rainy days is relatively stable across these months.

As the year progresses into the drier months, rainfall tends to decrease, particularly in July when only 196 mm (7.7 in) falls across 21 days. However, the variation remains minimal, as even the driest month receives just under 200 mm of rain. Overall, precipitation patterns highlight Sarawak's tropical rainforest climate, with significant rain year-round and only slight variations in intensity. This consistent rainfall fosters the region's lush biodiversity and vibrant ecosystems, integral to its rich natural heritage.

Monthly Average Precipitation in Sarawak, Malaysia

The average monthly precipitation in Sarawak, providing insights into seasonal rainfall patterns and the region's precipitation trends throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec253215246228254231196215273294317349
Data source: Sarawak precipitation data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.
Choose your preferred precipitation unit

Sunshine Duration in Sarawak

In Sarawak, Malaysia, sunshine duration demonstrates a clear seasonal trend, with notable increases as the year progresses. Starting from 216 hours of sunshine in January, the region experiences a steady ascent in solar exposure, reaching its peak in July with an impressive 295 hours. This pattern showcases the typical tropical climate, where longer daylight hours coincide with the warmer months, providing ample sunlight during the mid-year. The months leading up to summer—March through June—also contribute significantly to this trend, with each month recording over 280 hours of sunshine, thus enhancing outdoor activities and agricultural productivity.

Following the peak in July, sunshine hours begin to moderate slightly but remain robust through the late summer and fall. August and September still offer healthy sunshine totals of 290 hours and 262 hours, respectively, although there is a noticeable dip in sunshine during the months of November and December, which each receive 262 hours. This decline reflects the onset of the wet season, where cloud cover and precipitation may reduce sunlight exposure. Overall, Sarawak's sunshine patterns illustrate a vibrant contrast between the sunny peaks of mid-year and the muted illumination of the rainy months, highlighting the region's dynamic climatic conditions.

Monthly Sunshine in Sarawak, Malaysia

Monthly sunshine duration represents the total hours of direct sunlight Sarawak receives each month, excluding periods when the sun is obscured by clouds or other obstructions.
JanFebMarAprMayJunJulAugSepOctNovDec216h254h283h284h288h280h295h290h262h272h262h267h
Data source: Sarawak sunshine duration data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.

Sarawak UV Index Trends

In Sarawak, Malaysia, the UV Index consistently falls within the extreme category throughout the year, highlighting the region's potential for high levels of solar radiation. Notably, the UV Index peaks in March and April, reaching values of 17, which signifies an exceptionally high risk of harm from unprotected sun exposure. With a burn time of just 10 minutes, residents and visitors alike are urged to take precautionary measures, such as applying high-SPF sunscreen and wearing protective clothing when outdoors during these months. This extreme categorization of UV exposure illustrates the importance of sun safety measures in Sarawak's tropical climate.

As the year progresses, the UV Index remains elevated, though it slightly decreases in June to 13, and again in December. Despite this reduction, the readings still denote a high risk, with a burn time remaining at a mere 10 minutes across all months. This indicates that even during the cooler months, individuals should remain vigilant against sun exposure, as the tropical sun can be fiercely intense. Understanding the UV Index trends in Sarawak is vital for promoting awareness about sun safety, encouraging residents and travelers to enjoy the outdoors while protecting themselves from harmful UV radiation.

Monthly Maximum UV Index for Sarawak, Malaysia

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Sarawak. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec141617171513141515151413
Data source: Sarawak UV Index data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

Daylight Hours in Sarawak

In Sarawak, Malaysia, daylight duration exhibits slight seasonal variations, remaining relatively stable throughout the year. January begins with about 11 hours of daylight, gradually increasing to 12 hours by February and maintaining this level from March through October. This consistency in daylight hours not only supports the region's rich biodiversity but also offers ample time for outdoor activities, agricultural practices, and community engagements, which can thrive under the reliable daylight conditions characteristic of the tropics.

As the year transitions into November and December, daylight duration dips back to 11 hours. This subtle change reflects the minimal seasonal shifts typical for Equatorial regions, where the length of day remains fairly constant irrespective of the month. These enduring daylight hours contribute to Sarawak's lush landscapes and vibrant ecosystems, allowing for continuous growth and life cycles. Ultimately, the stable daylight duration throughout the year underscores the tropical environment's ability to sustain both its natural habitats and the lifestyle of its residents.

Average Monthly Daylight Hours in Sarawak, Malaysia

This chart shows the total daylight hours Sarawak receives each month, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec716h720h724h729h734h736h735h731h726h721h717h715h
Data source: Sarawak daylight hours, calculated based on aggregated data for various regional locations, determined by the times between sunrise and sunset.

Climate Highlights of Sarawak's Popular Destinations

Kuching, Malaysia, experiences a tropical rainforest climate characterized by warm temperatures and high humidity year-round. Average monthly temperatures range from 26°C (79°F) to 27°C (81°F), with maximums peaking at 35°C (95°F) during the hottest months of July and August. Precipitation is abundant, with the wettest months being December and February, receiving over 400 mm (15.7 in) and 341 mm (13.4 in), respectively. Sunshine hours vary, peaking in July at 298 hours, which offers a respite from the frequent rainfall. For more detailed information, visit Kuching climate.

Conclusion

In conclusion, Sarawak, Malaysia, exemplifies a dynamic tropical ecosystem characterized by consistent warmth, significant precipitation, and ample sunlight throughout the year. The region's climate, marked by an abundant UV Index and stable daylight duration, fosters lush biodiversity and supports various activities for its inhabitants. Understanding these climatic and environmental patterns is essential for both local residents and visitors, as it guides appropriate sun safety measures and highlights the ecological richness of Sarawak. This unique interplay of temperature, rainfall, sunshine, and daylight reinforces Sarawak's reputation as a vibrant and life-sustaining environment, making it a vital area for conservation and exploration.

Discover the Climate of Sarawak's Places

B K L M S