Kihei (HI) Temperature by Month

The average annual maximum temperature in Kihei, Hawaii, United States of America is 28°C (82°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how Kihei compares to cities worldwide.

In Kihei temperatures are generally consistent throughout the year. Maximum daytime temperatures range from a comfortable 26°C (79°F) in January to a comfortable 30°C (86°F) in August. Nighttime lows range from 23°C (73°F) in August to 19°C (66°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Kihei by month:

Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. August, the warmest month of the year, receives 285 hours of sunshine.

The chart below shows the average temperature throughout the year:

Kihei's average annual maximum temperature is 28°C (82°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.

Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Kihei, January is the coolest month, with average highs of 26°C (79°F) and humidity around 78%, considered high. In August, the warmest month, temperatures average 30°C (86°F) with 69% humidity, conditions that feel high. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round, large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.

For more on Kihei's weather, including monthly rainfall, sunshine hours, and humidity, visit our Kihei climate page.