Sarikei experiences a relatively consistent temperature throughout the year, with average highs ranging from 26°C in January and February to 28°C in July. The hottest months are June to August, with temperatures often reaching up to 36°C, while the cooler months are from December to March, with temperatures around 22-24°C. April to November see a slight increase in temperature, but not significantly. Overall, the town has a warm and humid climate year-round, with little seasonal variation.