Most expats with children live in Luanda Sul in the southern suburbs of the city. There are a number of good expat compounds here which are well guarded and considered safe. Most of Luanda's English international schools are in this area and with the traffic a real issue and commuting times to consider, living as close as possible to good schools is a must.
Safety outside of Luanda remains a concern and travel outside of the city should be undertaken with caution. Landmines remain in many areas and you should stick to the main roads and avoid landmined areas, which are usually well-signposted. Travel in rural areas should preferably be done in a convoy of two or more vehicles, which will most likely need to have 4x4 capability. The northern Cabinda region should be avoided - insurgent groups continue to operate in these areas and foreigners have been attached in the past.
I suggest having a read of our Angola expat guide for further information on moving to and living in Angola. The guide is full of useful information about education and schools, culture shock and the cost of living in Angola. We have also just launched our new Moving to Luanda page, so go check it out!
Good luck with your decision! I hope it all works out for you and your family.
Angola's weather is usually quite warm and dry. You can click on this link to be taken to a page for more information about the weather in Angola.
My brother had got a job offer in a company in Angola with a salary of 1600$/month. How sufficient is the salary considering the cost of living there?