When travelling, we recommend packing in preparation to handle common weather conditions. The rainfall in Balikpapan is typically less than Phuket. We can gather that this will continue over the next 10 days.
Expect the weather to be around 34 °C on average in February. 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 Phuket is generally hotter than in Balikpapan.