California · United States
Diamond Bar travel guide
Diamond Bar is a city in California, United States, home to about 55,000 people.
- Best months
- April to June and September to November
- Nearest airport
- ONT21 km · Ontario International Airport
- Currency
- USDUnited States dollar
- Time zone
- America/Los Angeles
- Language
- Carolinian, Chamorro, Hawaiian
When to go
The best time to visit Diamond Bar
The most comfortable months for a city stay in Diamond Bar are April to June and September to November. August is the warmest month, with average highs of 32 °C; January is the wettest, with about 88 mm of rain.
Comfortable means average daytime high between 18 °C and 29 °C and under 80 mm of rain in the month. Averages for 1991–2020 over the surrounding area, a grid square about 50 km across, so a coast or a nearby mountain can make the town itself warmer or cooler. Data: CRU TS v4.10, Climatic Research Unit, University of East Anglia (Open Database License).
Getting there
Getting to Diamond Bar: airports and arrival
The nearest airport with scheduled flights is Ontario International Airport (ONT), about 21 km from the city centre in a straight line; John Wayne Orange County International Airport (SNA, 37 km) and Long Beach International Airport (LGB, 37 km) are also within reach.
ONT · Ontario International Airport
SNA · John Wayne Orange County International Airport
LGB · Long Beach International Airport
Questions
Diamond Bar: questions travellers ask
When is the best time to visit Diamond Bar?
The most comfortable months for a city stay in Diamond Bar are April to June and September to November. August is the warmest month, with average highs of 32 °C; January is the wettest, with about 88 mm of rain.
Which airport is closest to Diamond Bar?
The nearest airport with scheduled flights is Ontario International Airport (ONT), about 21 km from the city centre in a straight line; John Wayne Orange County International Airport (SNA, 37 km) and Long Beach International Airport (LGB, 37 km) are also within reach.
What currency is used in Diamond Bar?
United States dollar (USD).
Nearby
Destinations near Diamond Bar
Sources: city facts from Wikidata and Wikipedia; airports from OurAirports; climate from CRU TS v4.10 (University of East Anglia Climatic Research Unit), 1991–2020 monthly means, 0.5° grid; places to stay, guest scores and amenities from each operator's own public pages. How this guide is made.