April is the beginning of the dry season in Hawaii.
That means that in April the precipitation is lower compared to the previous months.
The weather in Hawaii in April is warm and pleasant, making it a good time to visit for those who want to enjoy warm weather and outdoor activities without the risk of heavy rainfall.
Read on the find out more information on the Hawaii weather in April.
Average temperature
April in Hawaii is characterized by comfortable temperatures. The average high and low temperatures for each of the main Hawaiian islands in April are presented in the table below.
The average high temperatures in Hawaii range from 22°C (72°F) to 26°C (79°F), while the average low temperatures range from 13°C (56°F) to 23°C (74°F).
| Island | Average High | Average Low |
| Hawaii | 25°C / 77°F | 23°C / 74°F |
| Maui | 23°C / 73°F | 13°C / 56°F |
| Oahu (Honolulu) | 26°C / 79°F | 19°C / 66°F |
| Kauai | 22°C / 72°F | 14°C / 57°F |
| Molokai | 25°C / 77°F | 18°C / 64°F |
| Lanai | 24°C / 75°F | 17°C / 62°F |
| Niihau | 25°C / 77°F | 23°C / 73°F |
| Kahoolawe | 25°C / 76°F | 19°C / 67°F |
To provide more context, the average maximum temperatures for the entire year in Honolulu, the capital city of Hawaii, are shown in the graph below.
Average seawater temperature
See below for a table of the average seawater temperature for each of the main Hawaiian islands in April.
In April, the average seawater temperature in the Hawaiian Islands ranges from 24.5°C (76°F) on Kauai to 25°C (77°F) on Oahu, Niihau, and Kahoolawe.
These temperatures are relatively consistent across the islands, with just a 0.5°C (0.9°F) difference between the highest and the lowest average temperatures.
| Island | Average Temperature |
| Hawaii | 24.8°C / 76.4°F |
| Maui | 24.9°C / 76.8°F |
| Oahu (Honolulu) | 25°C / 77°F |
| Kauai | 24.5°C / 76°F |
| Molokai | 24.9°C / 76.8°F |
| Lanai | 24.9°C / 76.8°F |
| Niihau | 25°C / 77°F |
| Kahoolawe | 25°C / 77°F |
To give you more context, the following chart shows the average seawater temperature in the Honolulu area.
Average rainfall
The table below presents the average rainfall and the number of rainy days in April on each of the main Hawaiian islands.
April marks the beginning of the dry season in Hawaii, so it is generally less rainy than in the wet season months.
The average rainfall in Hawaii in April ranges from 11.2 mm (0.4 in) on Molokai to 306.3 mm (12.1 in) on Kauai. There are typically between 1 and 5 rainy days on each island, with the exception of Kauai which has 23 rainy days on average in April.
| Island | Total Rainfall | Number of Rainy Days |
| Hawaii | 50 mm / 2 in | 2 |
| Maui | 44.1 mm / 1.7 in | 4 |
| Oahu (Honolulu) | 25.5 mm / 1 in | 5 |
| Kauai | 306.3 mm / 12.1 in | 23 |
| Molokai | 11.2 mm / 0.4 in | 1 |
| Lanai | 46.7 mm / 1.8 in | 5 |
| Niihau | 66 mm / 2.6 in | 3 |
| Kahoolawe | 22 mm / 0.9 in | 3 |
For further context, the chart below illustrates the average rainfall by month in Honolulu (Oahu island).
Hawaii weather in April – FAQ
Is April rainy season in Hawaii?
No, April marks the start of the dry season in Hawaii.
This means that April is usually less rainy than the wet season months of November through March. April has less rain on average than the other months of the year, and there are fewer wet days.
However, rain is still possible in Hawaii at this time of year, particularly on the windward (eastern) portion of the islands, which receives greater rainfall.
Is it warm enough to swim in Hawaii in April?
The average seawater temperature in Hawaii in April ranges from 24.5°C (76°F) on Kauai to 25°C (77°F) on Oahu and Kahoolawe. These temperatures are generally warm enough for swimming.
What should I wear in Hawaii in April?
In April, you can expect mostly warm and sunny weather in Hawaii.
Pack swimsuits, sunscreen, and beach cover-ups for the beach. You should also bring a hat and sunglasses for sun protection.
If you intend on doing any outdoor activities or seeing the islands, bring lightweight, breathable attire such as shorts, t-shirts, and dresses. A light jacket or sweater is also recommended for chilly evenings.
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