Newborns sleep 16 or more hours a day, but often in stretches of just a few hours at a time. Although the pattern might be erratic at first, a more consistent sleep schedule will emerge as your baby matures and can go longer between feedings. By age 3 to 4 months, many babies sleep at least five hours at a time. At some point during a baby's first year â every baby is different â he or she will start sleeping for about 10 hours each night. 1  Next.
The month of April in San Diego experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 31% to 26%. The clearest day of the month is April 29, with clear, mostly clear, or partly cloudy conditions 74% of the time.
Weather in San Diego in September. The average maximum daytime temperature in San Diego in September is a warm 26Â°C (79Â°F) with low heat & humidity. There are usually 9 hours of bright sunshine each day, which represents 70% of the 12 hours of daylight. The average sea temperature in and around San Diego in September is 20Â°C (68Â°F). Expect 4mm (0.2 inches) of rainfall across the whole of September with 1 day with some rain falling. Maximum UV levels will be very high (8 UV index) at midday when the skies are clear.