In March, Phnom Penh enters the peak of its hot dry season. You can expect scorching days with temperatures often reaching 34°C to 37°C (93°F–99°F) and muggy nights averaging 23°C to 26°C (73°F–79°F). March Weather Summary Temperature: Typically the hottest time of the year before the April peak. Daytime highs are extremely high, while nights remain warm and humid. Sunshine: Expect about 8 to 9 hours of bright sunshine daily. Skies are generally clear, though cloud cover increases toward the end of the month. Rainfall: Very dry, with only about 2 to 4 rainy days on average. Total monthly precipitation is low, typically between 10mm and 44mm. Humidity: Feels "very high" or "oppressive," particularly in the afternoons. Humidity levels typically hover around 53% to 71%. UV Index: Extreme (11+). Protection from the sun is essential. Traveler Tips Plan Early: Start your sightseeing at sunrise to avoid the midday heat. Many travelers take a break...