Preheat your oven to 350°F (175°C).

Grease your 9-inch round cake pan with oil or butter and lightly flour it.

In a mixing bowl, whisk together the sugar, water, and vegetable oil until well blended.

In a separate bowl, combine the flour, baking soda, cinnamon, nutmeg, and salt.

Gradually add the dry ingredients to the wet mixture, stirring until just combined.

Gently fold in the raisins until evenly distributed.

Pour the batter into the prepared cake pan and smooth the top.

Bake for 40 to 45 minutes, or until a toothpick inserted in the center comes out clean.

Once baked, let the cake cool in the pan for 10 minutes before transferring it to a cooling rack.