The mercury's rising—time to make a splash. Play it cool in your pool, whether it’s in-ground or tidal. Have your friends over to sip sangria on the beach or lounge by the pool (umbrella drink in hand) with sun-dappled online pool party invitations.

Nothing beats summer heat like a sea breeze, but don’t worry—the landlocked can tag along, too. Throw a pool party with an invitation featuring an azure oasis that matches (or at least inspires) your own backyard getaway. Summer babes can have a beach blanket bash inland with pool party birthday invitations featuring lifesavers, beach balls, and inflatable sea monsters for the floaties set. Slightly more advanced birthday celebrators can use cheeky designs accessorized with skimpy swimwear and sandals to match. Invitations from experts in entertaining like Jonathan Adler and kate spade new york bring a bit of their indoor refinement to your patio. If you’re throwing an event overlooking open water, nautically themed designs and charming seascapes prep your guests for a day of Cape Codders, caftans, and catamarans. (But please, don’t drink and skipper.) You can gather the gang for clandestine beers beside the breakers, too, with more casual invitations for a leisurely day at the beach. When the night falls, pick a design inspired by a sunset scene straight from Oahu—blue Hawaii no more.

Customize your invitation in colors and type that float your boat and get everyone in the pool with easy online delivery. You can pick an envelope liner and backdrop that pair well with your event, whether it’s a Hockney-esque SoCal swimming pool or a view on your private beach. Your event is sure to make waves, but our RSVP and messaging tools make planning and hosting a smooth passage. After everyone’s high and dry, you can post a few photos of your guests’ synchronized swimming routine in an online gallery.

With only 100 days of summer, you’ll need to plan a lot of parties to work through your resort wardrobe. Debut the white linen at a Memorial Day barbecue and shoot off fireworks on the Fourth of July, but also take a look at invitations perfect for every summer party you can think of (and some you haven’t yet).