Are there any keyboard shortcuts to switch between tabs in terminal?

Solution 1:

Select Next Tab: ⌘+} (selects the tab to the right of your current tab)

Select Previous Tab: ⌘+{ (select the tab to the left of your current tab)

These are the shortcuts listed under the Window menu, but I think it would make more sense to say ⌘+⇧+], since that's actually what you type.

Since there are menu items that these shortcuts trigger, you can use System Preferences-> Keyboard-> Keyboard Shortcuts-> Application Shortcuts (or App Shortcuts on newer OSX versions) to reassign the shortcuts to whatever you want. For Terminal, choose Other..., then, under Applications, go to Utilities -> Terminal.app:

Solution 2:

⌘ + ⇧ + arrow keys is also a valid option.

Enjoy!