When travelling, we recommend packing in preparation to handle common weather conditions. The rainfall in Singapore City Airport is typically less than Ostrava. We can gather that this will continue over the next 0 days.
Expect the weather to be around 33 °C on average in April. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in Ostrava is generally colder than in Singapore City Airport.