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My handbook for the car states 5W-30 is recommended, and good for down to -30°C and below and up to 40°C and above (ambient temperature). Sounds like a typical summer's day, here in Scotland.
the oil grade you need to use is really dependent on the climate of the country you gonna use the car in. Hotter climates require generally a thicker oil and colder ones a thinner oil. Your Honda handbook should have the recommended oil grades listed or just ask at your local Honda dealer.