Thanks for adding your experience, Sharon. We were told the North shore water is calmer in summer and Poipu area is calmer in winter. Its located on a bluff overlooking the ocean on the north shore, where you get views of the beautiful blue sea and the stunning lush, green cliffs. For all data based on historical data, we've averaged the data from the past 11 years (2010-2020). //-->. The following map shows the annual rainfall by area. The wettest month in Poipu Beach is March with 22cm of rain and June has the most days of rain with 24.7 days with some rain, In Poipu in December, there's a 11 % chance of rain on an average day. on the island. The coldest month, March has days with highs of 75F (24C) and lows of 72F (22C). What are your thoughts on staying somewhere near the north shores around this time? Annual precipitation in Koloa-Poipu is typically 40.6 inches per year (moderateAnalytics team at Dwellics grouped locations into 5 ranges for each metric: Lowest, Low, Moderate, High, Highest in the US) and snow covers the ground 0 days per year or 0.0% of the year (the lowestAnalytics team at Dwellics grouped locations into 5 ranges for each metric: Lowest, Low, Moderate, High, Highest in the US).