Mild 51°F temps at gun time mean comfortable early miles without overheating risk. Temps will climb significantly to 68°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing.
Race day forecast available in 54 days
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Distance: 13.1mi
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About the Carlsbad Half Marathon
The Carlsbad Half Marathon is an out-and-back course that starts and finishes at The Shoppes at Carlsbad in northern San Diego County. Runners pass the Buena Vista Lagoon early, then follow Carlsbad Boulevard (Highway 101) south along the Pacific Ocean to a turnaround at Breakwater Road and return to the finish. The USATF-certified course is gently rolling with no major elevation changes, and more than 8 miles of it run along the ocean. It shares its start area with the marathon and is run on the Sunday of race weekend.
The 2027 Carlsbad Half Marathon will be held on Sunday January 17, 2027.
What is the time limit for the Carlsbad Half Marathon?
The time limit for the Carlsbad Half Marathon is 4 hours.
What will the weather be like for the 2027 Carlsbad Half Marathon?
The forecast calls for a high of 67°F and a low of 46°F with a 6% chance of rain. Check our detailed hourly forecast above for the best half marathon race plan.
What is the weather usually like for the Carlsbad Half Marathon?
Over the 27 years racecast.io has race-day weather for (2000 to 2026), it averaged 46°F at the start and 54°F by a typical finish. Rain fell during race hours in 2 of those years (2013 and 2023).
What was the hottest Carlsbad Half Marathon?
Of the 27 years on record, 2018 was the warmest, reaching 65°F during race hours. The coldest start was 2001, at 36°F.
What was the windiest Carlsbad Half Marathon?
Of the 27 years on record, 2023 was the windiest, with wind averaging 8 mph during race hours. The calmest was 2000, at 0 mph.
Carlsbad Half Marathon weather history
Based on 27 years of data
Avg Temp
50°F
L:46° H:54°
RunScore
Conditions
Rain Freq
7%
2 of 27 yrs
Wind3mph
Dew40°F
Temperature History
Range of temperatures during race hours for each year.
