A heavy rain watch is in place for Bay of Plenty from the early hours of tomorrow morning.
MetService said periods of heavy rain were expected in the region west of Kawerau and Coromandel Peninsula from about 3am through to 9am Wednesday.
A complex trough over the Tasman Sea is forcing a strong, moist north to northeast flow over New Zealand the coming days.
Rotorua and Tauranga could expect fine spells and a few showers today with drizzle this evening.
