Very large breeds may only have a heat cycle once every 12-18 months. In most giant breeds (Great Danes, Irish Wolfhounds, St Bernard's, etc.) an oestrus cycle every twelve months is common.
Ho Chih Minh City. April is the month with the warmest average high temperature in Ho Chi Ming City. The average high temperature for the month is 95 degrees, and the average low is 79 degrees. December has the lowest temperature on average in Ho Chi Minh City, with an average low temperature of 71 degrees. The average high temperature for December is 89 degrees. No month in Ho Chi Minh City has an average high temperature of less than 89 degrees.
Hanoi Climate & Temperature. 1  Hanoi, Vietnam is at 21 1'N, 105 52'E, 16 m (52 ft). 2  See map. 3  Hanoi has a humid subtropical hot summer climate that is mild with dry winters, hot humid summers and moderate seasonality (K ppen-Geiger classification: Cwa). During summer average high temperatures are 32.7Â°C (90.8Â°F) and average low temperatures are 26Â°C (78.8Â°F). 2  Come autumn/ fall temperatures decrease achieving average highs of 28.7Â°C (83.6Â°F) during the day and lows of 21.3Â°C (70.4Â°F) generally shortly after sunrise.