Hi royal45

I am listing you some basic information like climate & cost of living in Khartoum. If you have any further queries do not hesitate to ask on the forum.
Here are the price of some basics things and now it up to you to calculate your cost of living there:
RestaurantsMeal, Inexpensive Restaurant
4.96 Meal for 2, Mid-range Restaurant
17.16 Combo Meal at McDonalds or Similar
11.44 Coke/Pepsi (0.33 liter bottle)
0.19 Water (0.33 liter bottle)
0.19 Markets Milk (regular), 1 liter
1.22 Loaf of Fresh Bread
1.14 Eggs (12)
1.33 Fresh Cheese (1kg)
19.06 Chicken Breasts (Boneless, Skinless), (1kg)
4.57 Water (1.5 liter bottle)
0.46 Pack of Cigarettes (Marlboro)
3.05 Transportation One-way Ticket (local transport)
0.38 Taxi (5km within center)
4.66 Gasoline (1 liter)
0.50 Utilities (Monthly) Basic (Electricity, Gas, Water, Garbage)
114.37 1 min. of Prepaid Mobile Tariff (no discounts or plans)
0.08 Internet (2 Mbps ADSL flat)
40.03 Rent Per Month Apartment (1 bedroom) in City Centre
400.30 Apartment (1 bedroom) Outside of Centre
355.83 Apartment (3 bedrooms) in City Centre
1,010.29 Apartment (3 bedrooms) Outside of Centre
695.77 Buy Apartment Price Price per Square Meter to Buy Apartment in City Centre
11,437.29 Price per Square Meter to Buy Apartment Outside of Centre
762.49 Climate in KhartoumThe weather in Khartoum is very hot in the summer months, with temperatures ranging from the high 80s up to 120 F. During the winter months, it is cooler and dryer, with temperatures between 70F and 90F. The rainy season runs from July to September, bringing the temperatures down a little.
Regards!
Source: Numbeo, Cost of Living in Sudan