Using eSIM is simple and quick; just scan the QR code to use it. During my 5-day trip to Boston, even in the small seaside towns outside the city, reception was excellent. The price is reasonable, and I'll definitely buy another one for my business trip to the US in November.
I often lose my SIM card when traveling abroad, but this new method that eliminates the need to replace the card is incredibly convenient. Most importantly, it works flawlessly with the internet, which is fantastic.
Anonymous User
Business traveler
Hawaii Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Hawaii year round climate
Spring (March–May): Average 13.3–14.5°C, mild and dry climate with sunny weather, suitable for outdoor activities. Common activities: snorkeling, surfing, hiking. Recommended clothing: light and breathable clothing, light jacket.
Summer (June–August): Average 15.2–16.5°C, warm and humid climate, with more rainfall in July. Common activities: swimming, sunbathing, whale watching. Recommended clothing: light short-sleeved clothing, swimwear, sun-protective clothing.
Autumn (September–November): Average 15.4–13.8°C, comfortable and pleasant climate, with more rainfall in October. Common activities: hiking, sightseeing, enjoying local cuisine. Recommended clothing: light jacket, long pants.
Winter (December–February): Average 13.3–11.8°C, mild and dry climate with abundant sunshine. Common activities: whale watching, stargazing, leisure vacation. Recommended clothing: light warm clothing, light jacket.
Hawaii climatological average
Annual average temperature: approx. 14.3°C / Annual rainfall: approx. 219 mm / Summer humidity: 60%–70% / Rainiest month: July
Hawaii monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
13.1°C
0
February
11.8°C
23.1
March
13.3°C
0
April
13.8°C
0
May
14.5°C
0
June
15.2°C
0
July
16.5°C
122.3
August
16.1°C
0
September
15.4°C
0
October
15.2°C
73.6
November
13.8°C
0
December
13.3°C
0
Hawaii weather for the next seven days
9/18
Friday
Sunny
24.2°C/18.6°C
9/19
Saturday
Patchy rain nearby
24.1°C/17.8°C
9/20
Sunday
Patchy rain nearby
22.1°C/17°C
9/21
Monday
Patchy rain nearby
22.8°C/17.2°C
9/22
Tuesday
Light rain shower
24.2°C/18.3°C
9/23
Wednesday
Light rain shower
19.2°C/18.6°C
9/24
Thursday
Light rain shower
19.1°C/18.3°C
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